258261091092 has 36 divisors (see below), whose sum is σ = 677005414176. Its totient is φ = 86087030040.

The previous prime is 258261091043. The next prime is 258261091129. The reversal of 258261091092 is 290190162852.

It is a happy number.

258261091092 is a `hidden beast` number, since 2 + 582 + 61 + 0 + 9 + 1 + 0 + 9 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 132849384 + ... + 132851327.

Almost surely, 2^258261091092 is an apocalyptic number.

It is an amenable number.

258261091092 is an abundant number, since it is smaller than the sum of its proper divisors (418744323084).

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

258261091092 is a wasteful number, since it uses less digits than its factorization.

258261091092 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 265700730 (or 265700716 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 45.

The spelling of 258261091092 in words is "two hundred fifty-eight billion, two hundred sixty-one million, ninety-one thousand, ninety-two".