258055630878 has 16 divisors (see below), whose sum is σ = 516548288016. Its totient is φ = 85945705920.

The previous prime is 258055630853. The next prime is 258055630883. The reversal of 258055630878 is 878036550852.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18201751 + ... + 18215922.

It is an arithmetic number, because the mean of its divisors is an integer number (32284268001).

Almost surely, 2^258055630878 is an apocalyptic number.

258055630878 is an abundant number, since it is smaller than the sum of its proper divisors (258492657138).

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

258055630878 is a wasteful number, since it uses less digits than its factorization.

258055630878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36418859.

The product of its (nonzero) digits is 16128000, while the sum is 57.

The spelling of 258055630878 in words is "two hundred fifty-eight billion, fifty-five million, six hundred thirty thousand, eight hundred seventy-eight".