113517270721 has 16 divisors (see below), whose sum is σ = 121339890000. Its totient is φ = 105823162368.

The previous prime is 113517270703. The next prime is 113517270739. The reversal of 113517270721 is 127072715311.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (113517270703) and next prime (113517270739).

It can be written as a sum of positive squares in 8 ways, for example, as 56085121 + 113461185600 = 7489^2 + 336840^2 .

It is not a de Polignac number, because 113517270721 - 2³¹ = 111369787073 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (113517270701) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2956555 + ... + 2994703.

It is an arithmetic number, because the mean of its divisors is an integer number (7583743125).

Almost surely, 2^113517270721 is an apocalyptic number.

It is an amenable number.

113517270721 is a deficient number, since it is larger than the sum of its proper divisors (7822619279).

113517270721 is a wasteful number, since it uses less digits than its factorization.

113517270721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39828.

The product of its (nonzero) digits is 20580, while the sum is 37.

The spelling of 113517270721 in words is "one hundred thirteen billion, five hundred seventeen million, two hundred seventy thousand, seven hundred twenty-one".