113716638097921 has 4 divisors (see below), whose sum is σ = 113725323411412. Its totient is φ = 113707952784432.

The previous prime is 113716638097897. The next prime is 113716638097963. The reversal of 113716638097921 is 129790836617311.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 54333277374321 + 59383360723600 = 7371111^2 + 7706060^2 .

It is a cyclic number.

It is not a de Polignac number, because 113716638097921 - 2¹³ = 113716638089729 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (113716638097991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4342637106 + ... + 4342663291.

It is an arithmetic number, because the mean of its divisors is an integer number (28431330852853).

Almost surely, 2^{113716638097921} is an apocalyptic number.

It is an amenable number.

113716638097921 is a deficient number, since it is larger than the sum of its proper divisors (8685313491).

113716638097921 is an equidigital number, since it uses as much as digits as its factorization.

113716638097921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8685313490.

The product of its (nonzero) digits is 20575296, while the sum is 64.

The spelling of 113716638097921 in words is "one hundred thirteen trillion, seven hundred sixteen billion, six hundred thirty-eight million, ninety-seven thousand, nine hundred twenty-one".