15656015551055 has 8 divisors (see below), whose sum is σ = 20495147630544. Its totient is φ = 11386193128000.

The previous prime is 15656015551039. The next prime is 15656015551109. The reversal of 15656015551055 is 55015551065651.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 15656015551055 - 2⁴ = 15656015551039 is a prime.

It is a super-2 number, since 2×15656015551055² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 15656015550994 and 15656015551012.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 142327414046 + ... + 142327414155.

It is an arithmetic number, because the mean of its divisors is an integer number (2561893453818).

Almost surely, 2^{15656015551055} is an apocalyptic number.

15656015551055 is a deficient number, since it is larger than the sum of its proper divisors (4839132079489).

15656015551055 is a wasteful number, since it uses less digits than its factorization.

15656015551055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 284654828217.

The product of its (nonzero) digits is 2812500, while the sum is 50.

The spelling of 15656015551055 in words is "fifteen trillion, six hundred fifty-six billion, fifteen million, five hundred fifty-one thousand, fifty-five".