115899393529 has 2 divisors, whose sum is σ = 115899393530. Its totient is φ = 115899393528.

The previous prime is 115899393527. The next prime is 115899393629. The reversal of 115899393529 is 925393998511.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 98197623225 + 17701770304 = 313365^2 + 133048^2 .

It is a cyclic number.

It is not a de Polignac number, because 115899393529 - 2¹ = 115899393527 is a prime.

Together with 115899393527, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (115899393527) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57949696764 + 57949696765.

It is an arithmetic number, because the mean of its divisors is an integer number (57949696765).

Almost surely, 2^115899393529 is an apocalyptic number.

It is an amenable number.

115899393529 is a deficient number, since it is larger than the sum of its proper divisors (1).

115899393529 is an equidigital number, since it uses as much as digits as its factorization.

115899393529 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 23619600, while the sum is 64.

The spelling of 115899393529 in words is "one hundred fifteen billion, eight hundred ninety-nine million, three hundred ninety-three thousand, five hundred twenty-nine".