13988888888931 has 24 divisors (see below), whose sum is σ = 22555727827776. Its totient is φ = 8280949022640.

The previous prime is 13988888888927. The next prime is 13988888888939.

It is a happy number.

13988888888931 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 13988888888931 - 2² = 13988888888927 is a prime.

It is a super-2 number, since 2×13988888888931² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (13988888888939) 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 23 ways as a sum of consecutive naturals, for example, 1643041185 + ... + 1643049698.

It is an arithmetic number, because the mean of its divisors is an integer number (939821992824).

Almost surely, 2^{13988888888931} is an apocalyptic number.

13988888888931 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

13988888888931 is a deficient number, since it is larger than the sum of its proper divisors (8566838938845).

13988888888931 is a wasteful number, since it uses less digits than its factorization.

13988888888931 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3286090943 (or 3286090940 counting only the distinct ones).

The product of its digits is 12230590464, while the sum is 90.

The spelling of 13988888888931 in words is "thirteen trillion, nine hundred eighty-eight billion, eight hundred eighty-eight million, eight hundred eighty-eight thousand, nine hundred thirty-one".