13813818751257 has 12 divisors (see below), whose sum is σ = 21425514798096. Its totient is φ = 7893610714920.

The previous prime is 13813818751223. The next prime is 13813818751259. The reversal of 13813818751257 is 75215781831831.

It is not a de Polignac number, because 13813818751257 - 2¹² = 13813818747161 is a prime.

It is a hoax number, since the sum of its digits (60) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 13813818751257.

It is not an unprimeable number, because it can be changed into a prime (13813818751259) 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 11 ways as a sum of consecutive naturals, for example, 46985777919 + ... + 46985778212.

It is an arithmetic number, because the mean of its divisors is an integer number (1785459566508).

Almost surely, 2^{13813818751257} is an apocalyptic number.

It is an amenable number.

13813818751257 is a deficient number, since it is larger than the sum of its proper divisors (7611696046839).

13813818751257 is an equidigital number, since it uses as much as digits as its factorization.

13813818751257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93971556148 (or 93971556141 counting only the distinct ones).

The product of its digits is 11289600, while the sum is 60.

The spelling of 13813818751257 in words is "thirteen trillion, eight hundred thirteen billion, eight hundred eighteen million, seven hundred fifty-one thousand, two hundred fifty-seven".