55188118634 has 24 divisors (see below), whose sum is σ = 93211314084. Its totient is φ = 24473662400.

The previous prime is 55188118627. The next prime is 55188118639. The reversal of 55188118634 is 43681188155.

It can be written as a sum of positive squares in 2 ways, for example, as 46697049025 + 8491069609 = 216095^2 + 92147^2 .

It is not an unprimeable number, because it can be changed into a prime (55188118639) 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, 2771177 + ... + 2791020.

Almost surely, 2^55188118634 is an apocalyptic number.

55188118634 is a deficient number, since it is larger than the sum of its proper divisors (38023195450).

55188118634 is a wasteful number, since it uses less digits than its factorization.

55188118634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5562262 (or 5562251 counting only the distinct ones).

The product of its digits is 921600, while the sum is 50.

The spelling of 55188118634 in words is "fifty-five billion, one hundred eighty-eight million, one hundred eighteen thousand, six hundred thirty-four".