258865139630 has 32 divisors (see below), whose sum is σ = 467777642976. Its totient is φ = 103141747584.

The previous prime is 258865139573. The next prime is 258865139647. The reversal of 258865139630 is 36931568852.

258865139630 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×258865139630² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 10921352 + ... + 10945028.

It is an arithmetic number, because the mean of its divisors is an integer number (14618051343).

Almost surely, 2^258865139630 is an apocalyptic number.

258865139630 is a deficient number, since it is larger than the sum of its proper divisors (208912503346).

258865139630 is a wasteful number, since it uses less digits than its factorization.

258865139630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27908.

The product of its (nonzero) digits is 9331200, while the sum is 56.

The spelling of 258865139630 in words is "two hundred fifty-eight billion, eight hundred sixty-five million, one hundred thirty-nine thousand, six hundred thirty".