258638681413 has 12 divisors (see below), whose sum is σ = 306542113740. Its totient is φ = 217507460352.

The previous prime is 258638681387. The next prime is 258638681429. The reversal of 258638681413 is 314186836852.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 211546643364 + 47092038049 = 459942^2 + 217007^2 .

It is a de Polignac number, because none of the positive numbers 2^k-258638681413 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (258638681453) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 49793068 + ... + 49798261.

It is an arithmetic number, because the mean of its divisors is an integer number (25545176145).

Almost surely, 2^258638681413 is an apocalyptic number.

It is an amenable number.

258638681413 is a deficient number, since it is larger than the sum of its proper divisors (47903432327).

258638681413 is an equidigital number, since it uses as much as digits as its factorization.

258638681413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99591396 (or 99591389 counting only the distinct ones).

The product of its digits is 6635520, while the sum is 55.

The spelling of 258638681413 in words is "two hundred fifty-eight billion, six hundred thirty-eight million, six hundred eighty-one thousand, four hundred thirteen".