86626696931 has 2 divisors, whose sum is σ = 86626696932. Its totient is φ = 86626696930.

The previous prime is 86626696927. The next prime is 86626696939. The reversal of 86626696931 is 13969662668.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 86626696931 - 2² = 86626696927 is a prime.

It is a super-2 number, since 2×86626696931² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (86626696939) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43313348465 + 43313348466.

It is an arithmetic number, because the mean of its divisors is an integer number (43313348466).

Almost surely, 2^86626696931 is an apocalyptic number.

86626696931 is a deficient number, since it is larger than the sum of its proper divisors (1).

86626696931 is an equidigital number, since it uses as much as digits as its factorization.

86626696931 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 30233088, while the sum is 62.

The spelling of 86626696931 in words is "eighty-six billion, six hundred twenty-six million, six hundred ninety-six thousand, nine hundred thirty-one".