139698896931 has 24 divisors (see below), whose sum is σ = 226081103664. Its totient is φ = 82377725760.

The previous prime is 139698896927. The next prime is 139698896933.

139698896931 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 139698896931 - 2² = 139698896927 is a prime.

It is a super-2 number, since 2×139698896931² (a number of 23 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 139698896931.

It is not an unprimeable number, because it can be changed into a prime (139698896933) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 19065256 + ... + 19072581.

It is an arithmetic number, because the mean of its divisors is an integer number (9420045986).

Almost surely, 2^139698896931 is an apocalyptic number.

139698896931 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

139698896931 is a deficient number, since it is larger than the sum of its proper divisors (86382206733).

139698896931 is a wasteful number, since it uses less digits than its factorization.

139698896931 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38137891 (or 38137888 counting only the distinct ones).

The product of its digits is 136048896, while the sum is 72.

The spelling of 139698896931 in words is "one hundred thirty-nine billion, six hundred ninety-eight million, eight hundred ninety-six thousand, nine hundred thirty-one".