258861050613 has 32 divisors (see below), whose sum is σ = 418392328320. Its totient is φ = 156873847680.

The previous prime is 258861050587. The next prime is 258861050621. The reversal of 258861050613 is 316050168852.

258861050613 is a `hidden beast` number, since 2 + 5 + 88 + 61 + 0 + 506 + 1 + 3 = 666.

258861050613 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 258861050613 - 2²⁴ = 258844273397 is a prime.

It is a super-2 number, since 2×258861050613² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (258861050633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5666881 + ... + 5712377.

It is an arithmetic number, because the mean of its divisors is an integer number (13074760260).

Almost surely, 2^258861050613 is an apocalyptic number.

It is an amenable number.

258861050613 is a deficient number, since it is larger than the sum of its proper divisors (159531277707).

258861050613 is a wasteful number, since it uses less digits than its factorization.

258861050613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64674 (or 64668 counting only the distinct ones).

The product of its (nonzero) digits is 345600, while the sum is 45.

The spelling of 258861050613 in words is "two hundred fifty-eight billion, eight hundred sixty-one million, fifty thousand, six hundred thirteen".