13888866888831 has 32 divisors (see below), whose sum is σ = 21328352697600. Its totient is φ = 7950805793280.

The previous prime is 13888866888751. The next prime is 13888866888833.

13888866888831 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 13888866888831 - 2⁴³ = 5092773866623 is a prime.

It is a super-2 number, since 2×13888866888831² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13888866888833) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 32654136 + ... + 33076733.

It is an arithmetic number, because the mean of its divisors is an integer number (666511021800).

Almost surely, 2^{13888866888831} is an apocalyptic number.

13888866888831 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

13888866888831 is a deficient number, since it is larger than the sum of its proper divisors (7439485808769).

13888866888831 is a wasteful number, since it uses less digits than its factorization.

13888866888831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65731239.

The product of its digits is 5435817984, while the sum is 84.

The spelling of 13888866888831 in words is "thirteen trillion, eight hundred eighty-eight billion, eight hundred sixty-six million, eight hundred eighty-eight thousand, eight hundred thirty-one".