116638642529 has 2 divisors, whose sum is σ = 116638642530. Its totient is φ = 116638642528.

The previous prime is 116638642517. The next prime is 116638642577. The reversal of 116638642529 is 925246836611.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 85994389504 + 30644253025 = 293248^2 + 175055^2 .

It is an emirp because it is prime and its reverse (925246836611) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 116638642529 - 2⁸ = 116638642273 is a prime.

It is not a weakly prime, because it can be changed into another prime (116638632529) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58319321264 + 58319321265.

It is an arithmetic number, because the mean of its divisors is an integer number (58319321265).

Almost surely, 2^116638642529 is an apocalyptic number.

It is an amenable number.

116638642529 is a deficient number, since it is larger than the sum of its proper divisors (1).

116638642529 is an equidigital number, since it uses as much as digits as its factorization.

116638642529 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3732480, while the sum is 53.

The spelling of 116638642529 in words is "one hundred sixteen billion, six hundred thirty-eight million, six hundred forty-two thousand, five hundred twenty-nine".