55506055615128 has 96 divisors (see below), whose sum is σ = 150521013311760. Its totient is φ = 18478377012480.

The previous prime is 55506055615099. The next prime is 55506055615141. The reversal of 55506055615128 is 82151655060555.

55506055615128 is a `hidden beast` number, since 5 + 5 + 5 + 0 + 6 + 0 + 5 + 5 + 615 + 12 + 8 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1333586158 + ... + 1333627778.

Almost surely, 2^{55506055615128} is an apocalyptic number.

It is an amenable number.

55506055615128 is an abundant number, since it is smaller than the sum of its proper divisors (95014957696632).

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

55506055615128 is a wasteful number, since it uses less digits than its factorization.

55506055615128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64857 (or 64850 counting only the distinct ones).

The product of its (nonzero) digits is 9000000, while the sum is 54.

The spelling of 55506055615128 in words is "fifty-five trillion, five hundred six billion, fifty-five million, six hundred fifteen thousand, one hundred twenty-eight".