| Base | Representation |
|---|---|
| bin | 1011000011010010111110… |
| … | …1000100001010000100000 |
| 3 | 1121000122112022112010202100 |
| 4 | 2300310233220201100200 |
| 5 | 3043041240434202040 |
| 6 | 41502113523450400 |
| 7 | 2362620406452534 |
| oct | 260645750412040 |
| 9 | 47018468463670 |
| 10 | 12151261631520 |
| 11 | 3965359454430 |
| 12 | 1442bb4b26a00 |
| 13 | 6a1b22461c6b |
| 14 | 3001a4b43bc4 |
| 15 | 161137661b30 |
| hex | b0d2fa21420 |
12151261631520 has 144 divisors (see below), whose sum is σ = 45235833132672. Its totient is φ = 2945760391680.
The previous prime is 12151261631513. The next prime is 12151261631527. The reversal of 12151261631520 is 2513616215121.
12151261631520 is a `hidden beast` number, since 1 + 2 + 1 + 5 + 1 + 2 + 616 + 3 + 15 + 20 = 666.
It is an interprime number because it is at equal distance from previous prime (12151261631513) and next prime (12151261631527).
It is a tau number, because it is divible by the number of its divisors (144).
It is a Harshad number since it is a multiple of its sum of digits (36).
It is not an unprimeable number, because it can be changed into a prime (12151261631527) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (17) of ones.
It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 383546712 + ... + 383578391.
It is an arithmetic number, because the mean of its divisors is an integer number (314137730088).
Almost surely, 212151261631520 is an apocalyptic number.
12151261631520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.
It is an amenable number.
12151261631520 is an abundant number, since it is smaller than the sum of its proper divisors (33084571501152).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
12151261631520 is a wasteful number, since it uses less digits than its factorization.
12151261631520 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 767125135 (or 767125124 counting only the distinct ones).
The product of its (nonzero) digits is 21600, while the sum is 36.
Adding to 12151261631520 its reverse (2513616215121), we get a palindrome (14664877846641).
The spelling of 12151261631520 in words is "twelve trillion, one hundred fifty-one billion, two hundred sixty-one million, six hundred thirty-one thousand, five hundred twenty".
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