55658903121 has 12 divisors (see below), whose sum is σ = 80460066960. Its totient is φ = 37076455320.

The previous prime is 55658903119. The next prime is 55658903129. The reversal of 55658903121 is 12130985655.

55658903121 is a `hidden beast` number, since 5 + 56 + 589 + 0 + 3 + 12 + 1 = 666.

It is not a de Polignac number, because 55658903121 - 2¹ = 55658903119 is a prime.

It is not an unprimeable number, because it can be changed into a prime (55658903129) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2444715 + ... + 2467376.

It is an arithmetic number, because the mean of its divisors is an integer number (6705005580).

Almost surely, 2^55658903121 is an apocalyptic number.

It is an amenable number.

55658903121 is a deficient number, since it is larger than the sum of its proper divisors (24801163839).

55658903121 is a wasteful number, since it uses less digits than its factorization.

55658903121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4913356 (or 4913353 counting only the distinct ones).

The product of its (nonzero) digits is 324000, while the sum is 45.

The spelling of 55658903121 in words is "fifty-five billion, six hundred fifty-eight million, nine hundred three thousand, one hundred twenty-one".