113797497661 has 4 divisors (see below), whose sum is σ = 113824133692. Its totient is φ = 113770861632.

The previous prime is 113797497659. The next prime is 113797497679. The reversal of 113797497661 is 166794797311.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 166794797311 = 233687 ⋅713753.

It can be written as a sum of positive squares in 2 ways, for example, as 58375392100 + 55422105561 = 241610^2 + 235419^2 .

It is a cyclic number.

It is not a de Polignac number, because 113797497661 - 2¹ = 113797497659 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 113797497661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113797497691) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13311606 + ... + 13320151.

It is an arithmetic number, because the mean of its divisors is an integer number (28456033423).

Almost surely, 2^113797497661 is an apocalyptic number.

It is an amenable number.

113797497661 is a deficient number, since it is larger than the sum of its proper divisors (26636031).

113797497661 is an equidigital number, since it uses as much as digits as its factorization.

113797497661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26636030.

The product of its digits is 12002256, while the sum is 61.

The spelling of 113797497661 in words is "one hundred thirteen billion, seven hundred ninety-seven million, four hundred ninety-seven thousand, six hundred sixty-one".