13857666675831 has 24 divisors (see below), whose sum is σ = 22036656504720. Its totient is φ = 8321534611200.

The previous prime is 13857666675821. The next prime is 13857666675851.

It is a happy number.

13857666675831 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 13857666675831 - 2¹³ = 13857666667639 is a prime.

It is a super-2 number, since 2×13857666675831² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 13857666675831.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13857666675821) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 642082930 + ... + 642104511.

It is an arithmetic number, because the mean of its divisors is an integer number (918194021030).

Almost surely, 2^{13857666675831} is an apocalyptic number.

13857666675831 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

13857666675831 is a deficient number, since it is larger than the sum of its proper divisors (8178989828889).

13857666675831 is a wasteful number, since it uses less digits than its factorization.

13857666675831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1284187567 (or 1284187564 counting only the distinct ones).

The product of its digits is 914457600, while the sum is 72.

The spelling of 13857666675831 in words is "thirteen trillion, eight hundred fifty-seven billion, six hundred sixty-six million, six hundred seventy-five thousand, eight hundred thirty-one".