15555050065556 has 24 divisors (see below), whose sum is σ = 27537955304160. Its totient is φ = 7687555818912.

The previous prime is 15555050065553. The next prime is 15555050065627. The reversal of 15555050065556 is 65556005055551.

It is a Smith number, since the sum of its digits (53) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 15555050065498 and 15555050065507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15555050065553) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 61496495 + ... + 61748918.

It is an arithmetic number, because the mean of its divisors is an integer number (1147414804340).

Almost surely, 2^{15555050065556} is an apocalyptic number.

It is an amenable number.

15555050065556 is a deficient number, since it is larger than the sum of its proper divisors (11982905238604).

15555050065556 is a wasteful number, since it uses less digits than its factorization.

15555050065556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123245783 (or 123245781 counting only the distinct ones).

The product of its (nonzero) digits is 14062500, while the sum is 53.

The spelling of 15555050065556 in words is "fifteen trillion, five hundred fifty-five billion, fifty million, sixty-five thousand, five hundred fifty-six".