Base | Representation |
---|---|
bin | 100101010001000101… |
… | …001110110101110001 |
3 | 10211021201100020001211 |
4 | 211101011032311301 |
5 | 1123422322003130 |
6 | 30214353000121 |
7 | 2614416104620 |
oct | 452105166561 |
9 | 124251306054 |
10 | 40015031665 |
11 | 15a74495604 |
12 | 7908b53041 |
13 | 3a0921643b |
14 | 1d185a16b7 |
15 | 1092ea5a2a |
hex | 95114ed71 |
40015031665 has 16 divisors (see below), whose sum is σ = 54881027712. Its totient is φ = 27437243904.
The previous prime is 40015031629. The next prime is 40015031671. The reversal of 40015031665 is 56613051004.
It is a de Polignac number, because none of the positive numbers 2k-40015031665 is a prime.
It is an unprimeable number.
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 15 ways as a sum of consecutive naturals, for example, 1029057 + ... + 1067233.
It is an arithmetic number, because the mean of its divisors is an integer number (3430064232).
Almost surely, 240015031665 is an apocalyptic number.
It is an amenable number.
40015031665 is a deficient number, since it is larger than the sum of its proper divisors (14865996047).
40015031665 is a wasteful number, since it uses less digits than its factorization.
40015031665 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 68136.
The product of its (nonzero) digits is 10800, while the sum is 31.
Adding to 40015031665 its reverse (56613051004), we get a palindrome (96628082669).
The spelling of 40015031665 in words is "forty billion, fifteen million, thirty-one thousand, six hundred sixty-five".
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