15655011556655 has 8 divisors (see below), whose sum is σ = 18901265487792. Its totient is φ = 12447174832128.

The previous prime is 15655011556607. The next prime is 15655011556661. The reversal of 15655011556655 is 55665511055651.

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

It is a cyclic number.

It is not a de Polignac number, because 15655011556655 - 2¹⁴ = 15655011540271 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 15655011556655.

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, 9604300754 + ... + 9604302383.

It is an arithmetic number, because the mean of its divisors is an integer number (2362658185974).

Almost surely, 2^{15655011556655} is an apocalyptic number.

15655011556655 is a deficient number, since it is larger than the sum of its proper divisors (3246253931137).

15655011556655 is a wasteful number, since it uses less digits than its factorization.

15655011556655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19208603305.

The product of its (nonzero) digits is 16875000, while the sum is 56.

The spelling of 15655011556655 in words is "fifteen trillion, six hundred fifty-five billion, eleven million, five hundred fifty-six thousand, six hundred fifty-five".