55616521164 has 48 divisors (see below), whose sum is σ = 131645880576. Its totient is φ = 18271310400.

The previous prime is 55616521151. The next prime is 55616521183. The reversal of 55616521164 is 46112561655.

It is a zygodrome in base 2.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2828214 + ... + 2847810.

It is an arithmetic number, because the mean of its divisors is an integer number (2742622512).

Almost surely, 2^55616521164 is an apocalyptic number.

It is an amenable number.

55616521164 is an abundant number, since it is smaller than the sum of its proper divisors (76029359412).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55616521164 is a wasteful number, since it uses less digits than its factorization.

55616521164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23006 (or 23004 counting only the distinct ones).

The product of its digits is 216000, while the sum is 42.

The spelling of 55616521164 in words is "fifty-five billion, six hundred sixteen million, five hundred twenty-one thousand, one hundred sixty-four".