115659431009 has 2 divisors, whose sum is σ = 115659431010. Its totient is φ = 115659431008.

The previous prime is 115659430919. The next prime is 115659431033. The reversal of 115659431009 is 900134956511.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 107200582225 + 8458848784 = 327415^2 + 91972^2 .

It is a cyclic number.

It is not a de Polignac number, because 115659431009 - 2¹² = 115659426913 is a prime.

It is a super-3 number, since 3×115659431009³ (a number of 34 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (115659431089) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57829715504 + 57829715505.

It is an arithmetic number, because the mean of its divisors is an integer number (57829715505).

Almost surely, 2^115659431009 is an apocalyptic number.

It is an amenable number.

115659431009 is a deficient number, since it is larger than the sum of its proper divisors (1).

115659431009 is an equidigital number, since it uses as much as digits as its factorization.

115659431009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 145800, while the sum is 44.

The spelling of 115659431009 in words is "one hundred fifteen billion, six hundred fifty-nine million, four hundred thirty-one thousand, nine".