55918163239 has 2 divisors, whose sum is σ = 55918163240. Its totient is φ = 55918163238.

The previous prime is 55918163177. The next prime is 55918163309. The reversal of 55918163239 is 93236181955.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 55918163239 - 2²⁵ = 55884608807 is a prime.

It is a super-2 number, since 2×55918163239² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55918163839) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27959081619 + 27959081620.

It is an arithmetic number, because the mean of its divisors is an integer number (27959081620).

Almost surely, 2^55918163239 is an apocalyptic number.

55918163239 is a deficient number, since it is larger than the sum of its proper divisors (1).

55918163239 is an equidigital number, since it uses as much as digits as its factorization.

55918163239 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1749600, while the sum is 52.

The spelling of 55918163239 in words is "fifty-five billion, nine hundred eighteen million, one hundred sixty-three thousand, two hundred thirty-nine".