55555020156 has 48 divisors (see below), whose sum is σ = 131759196800. Its totient is φ = 18216384192.

The previous prime is 55555020119. The next prime is 55555020181. The reversal of 55555020156 is 65102055555.

It is a congruent number.

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, 29031 + ... + 334593.

Almost surely, 2^55555020156 is an apocalyptic number.

It is an amenable number.

55555020156 is an abundant number, since it is smaller than the sum of its proper divisors (76204176644).

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

55555020156 is a wasteful number, since it uses less digits than its factorization.

55555020156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 305818 (or 305816 counting only the distinct ones).

The product of its (nonzero) digits is 187500, while the sum is 39.

The spelling of 55555020156 in words is "fifty-five billion, five hundred fifty-five million, twenty thousand, one hundred fifty-six".