Base | Representation |
---|---|
bin | 100000001100100111… |
… | …0111001011101000000 |
3 | 20121110200101210122200 |
4 | 1000121032321131000 |
5 | 2113101024444410 |
6 | 51432550233200 |
7 | 4665265131450 |
oct | 1003116713500 |
9 | 217420353580 |
10 | 69142812480 |
11 | 27361351435 |
12 | 11497955800 |
13 | 669b9909c1 |
14 | 34bcc41d60 |
15 | 1bea23e3c0 |
hex | 10193b9740 |
69142812480 has 168 divisors, whose sum is σ = 271797182592. Its totient is φ = 15804066816.
The previous prime is 69142812421. The next prime is 69142812493. The reversal of 69142812480 is 8421824196.
69142812480 is a `hidden beast` number, since 6 + 91 + 4 + 2 + 81 + 2 + 480 = 666.
It is a tau number, because it is divible by the number of its divisors (168).
It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.
It is a Harshad number since it is a multiple of its sum of digits (45).
It is a congruent number.
It is an unprimeable number.
It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1694692 + ... + 1735011.
Almost surely, 269142812480 is an apocalyptic number.
69142812480 is a gapful number since it is divisible by the number (60) formed by its first and last digit.
It is an amenable number.
69142812480 is an abundant number, since it is smaller than the sum of its proper divisors (202654370112).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
69142812480 is a wasteful number, since it uses less digits than its factorization.
69142812480 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 3429733 (or 3429720 counting only the distinct ones).
The product of its (nonzero) digits is 221184, while the sum is 45.
The spelling of 69142812480 in words is "sixty-nine billion, one hundred forty-two million, eight hundred twelve thousand, four hundred eighty".
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