113661173251 has 8 divisors (see below), whose sum is σ = 114897971808. Its totient is φ = 112426560000.

The previous prime is 113661173233. The next prime is 113661173261. The reversal of 113661173251 is 152371166311.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 113661173251 - 2⁹ = 113661172739 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 113661173251.

It is not an unprimeable number, because it can be changed into a prime (113661173261) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 441630 + ... + 649891.

It is an arithmetic number, because the mean of its divisors is an integer number (14362246476).

Almost surely, 2^113661173251 is an apocalyptic number.

113661173251 is a deficient number, since it is larger than the sum of its proper divisors (1236798557).

113661173251 is a wasteful number, since it uses less digits than its factorization.

113661173251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1092653.

The product of its digits is 22680, while the sum is 37.

The spelling of 113661173251 in words is "one hundred thirteen billion, six hundred sixty-one million, one hundred seventy-three thousand, two hundred fifty-one".