55555555558056 has 32 divisors (see below), whose sum is σ = 140186915900640. Its totient is φ = 18345448251968.

The previous prime is 55555555558049. The next prime is 55555555558067. The reversal of 55555555558056 is 65085555555555.

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, 10816889091 + ... + 10816894226.

It is an arithmetic number, because the mean of its divisors is an integer number (4380841121895).

Almost surely, 2^{55555555558056} is an apocalyptic number.

It is an amenable number.

55555555558056 is an abundant number, since it is smaller than the sum of its proper divisors (84631360342584).

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

55555555558056 is a wasteful number, since it uses less digits than its factorization.

55555555558056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21633783433 (or 21633783429 counting only the distinct ones).

The product of its (nonzero) digits is 2343750000, while the sum is 69.

The spelling of 55555555558056 in words is "fifty-five trillion, five hundred fifty-five billion, five hundred fifty-five million, five hundred fifty-eight thousand, fifty-six".