55692558018 has 32 divisors (see below), whose sum is σ = 129142166400. Its totient is φ = 17757047088.

The previous prime is 55692558017. The next prime is 55692558023. The reversal of 55692558018 is 81085529655.

55692558018 is a `hidden beast` number, since 5 + 56 + 9 + 2 + 5 + 580 + 1 + 8 = 666.

It is a super-2 number, since 2×55692558018² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (55692558013) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22419273 + ... + 22421756.

It is an arithmetic number, because the mean of its divisors is an integer number (4035692700).

Almost surely, 2^55692558018 is an apocalyptic number.

55692558018 is an abundant number, since it is smaller than the sum of its proper divisors (73449608382).

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

55692558018 is a wasteful number, since it uses less digits than its factorization.

55692558018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44841063 (or 44841057 counting only the distinct ones).

The product of its (nonzero) digits is 4320000, while the sum is 54.

The spelling of 55692558018 in words is "fifty-five billion, six hundred ninety-two million, five hundred fifty-eight thousand, eighteen".