113165003657 has 18 divisors (see below), whose sum is σ = 121406303322. Its totient is φ = 105117962176.

The previous prime is 113165003647. The next prime is 113165003683. The reversal of 113165003657 is 756300561311.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 106508238736 + 6656764921 = 326356^2 + 81589^2 .

It is not a de Polignac number, because 113165003657 - 2⁴ = 113165003641 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 113165003657.

It is not an unprimeable number, because it can be changed into a prime (113165003647) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 115121588 + ... + 115122570.

It is an arithmetic number, because the mean of its divisors is an integer number (6744794629).

Almost surely, 2^113165003657 is an apocalyptic number.

113165003657 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

113165003657 is a deficient number, since it is larger than the sum of its proper divisors (8241299665).

113165003657 is an frugal number, since it uses more digits than its factorization.

113165003657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2149 (or 1083 counting only the distinct ones).

The product of its (nonzero) digits is 56700, while the sum is 38.

Adding to 113165003657 its reverse (756300561311), we get a palindrome (869465564968).

The spelling of 113165003657 in words is "one hundred thirteen billion, one hundred sixty-five million, three thousand, six hundred fifty-seven".