115399216993 has 2 divisors, whose sum is σ = 115399216994. Its totient is φ = 115399216992.

The previous prime is 115399216969. The next prime is 115399217027. The reversal of 115399216993 is 399612993511.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 84897642384 + 30501574609 = 291372^2 + 174647^2 .

It is a cyclic number.

It is not a de Polignac number, because 115399216993 - 2⁹ = 115399216481 is a prime.

It is not a weakly prime, because it can be changed into another prime (115399216903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57699608496 + 57699608497.

It is an arithmetic number, because the mean of its divisors is an integer number (57699608497).

Almost surely, 2^115399216993 is an apocalyptic number.

It is an amenable number.

115399216993 is a deficient number, since it is larger than the sum of its proper divisors (1).

115399216993 is an equidigital number, since it uses as much as digits as its factorization.

115399216993 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3542940, while the sum is 58.

The spelling of 115399216993 in words is "one hundred fifteen billion, three hundred ninety-nine million, two hundred sixteen thousand, nine hundred ninety-three".