55500500500556 has 96 divisors (see below), whose sum is σ = 100592246200320. Its totient is φ = 26776915200000.

The previous prime is 55500500500493. The next prime is 55500500500649. The reversal of 55500500500556 is 65500500500555.

It is a Harshad number since it is a multiple of its sum of digits (41).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3760443905 + ... + 3760458663.

It is an arithmetic number, because the mean of its divisors is an integer number (1047835897920).

Almost surely, 2^{55500500500556} is an apocalyptic number.

It is an amenable number.

55500500500556 is a deficient number, since it is larger than the sum of its proper divisors (45091745699764).

55500500500556 is a wasteful number, since it uses less digits than its factorization.

55500500500556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15687 (or 15685 counting only the distinct ones).

The product of its (nonzero) digits is 468750, while the sum is 41.

Subtracting 55500500500556 from its reverse (65500500500555), we obtain a palindrome (9999999999999).

The spelling of 55500500500556 in words is "fifty-five trillion, five hundred billion, five hundred million, five hundred thousand, five hundred fifty-six".