115206636431 has 2 divisors, whose sum is σ = 115206636432. Its totient is φ = 115206636430.

The previous prime is 115206636341. The next prime is 115206636527. The reversal of 115206636431 is 134636602511.

Together with previous prime (115206636341) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 115206636431 - 2²² = 115202442127 is a prime.

It is a super-2 number, since 2×115206636431² (a number of 23 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (115206636331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57603318215 + 57603318216.

It is an arithmetic number, because the mean of its divisors is an integer number (57603318216).

Almost surely, 2^115206636431 is an apocalyptic number.

115206636431 is a deficient number, since it is larger than the sum of its proper divisors (1).

115206636431 is an equidigital number, since it uses as much as digits as its factorization.

115206636431 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 77760, while the sum is 38.

The spelling of 115206636431 in words is "one hundred fifteen billion, two hundred six million, six hundred thirty-six thousand, four hundred thirty-one".