113039981657 has 2 divisors, whose sum is σ = 113039981658. Its totient is φ = 113039981656.

The previous prime is 113039981609. The next prime is 113039981693. The reversal of 113039981657 is 756189930311.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 111329662921 + 1710318736 = 333661^2 + 41356^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-113039981657 is a prime.

It is a super-3 number, since 3×113039981657³ (a number of 34 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 113039981599 and 113039981608.

It is not a weakly prime, because it can be changed into another prime (113039984657) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 56519990828 + 56519990829.

It is an arithmetic number, because the mean of its divisors is an integer number (56519990829).

Almost surely, 2^113039981657 is an apocalyptic number.

It is an amenable number.

113039981657 is a deficient number, since it is larger than the sum of its proper divisors (1).

113039981657 is an equidigital number, since it uses as much as digits as its factorization.

113039981657 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1224720, while the sum is 53.

The spelling of 113039981657 in words is "one hundred thirteen billion, thirty-nine million, nine hundred eighty-one thousand, six hundred fifty-seven".