113723266521 has 32 divisors (see below), whose sum is σ = 166138421760. Its totient is φ = 68873785344.

The previous prime is 113723266439. The next prime is 113723266523. The reversal of 113723266521 is 125662327311.

It is not a de Polignac number, because 113723266521 - 2⁹ = 113723266009 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 113723266521.

It is not an unprimeable number, because it can be changed into a prime (113723266523) 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 31 ways as a sum of consecutive naturals, for example, 5644161 + ... + 5664273.

It is an arithmetic number, because the mean of its divisors is an integer number (5191825680).

Almost surely, 2^113723266521 is an apocalyptic number.

It is an amenable number.

113723266521 is a deficient number, since it is larger than the sum of its proper divisors (52415155239).

113723266521 is a wasteful number, since it uses less digits than its factorization.

113723266521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23985.

The product of its digits is 90720, while the sum is 39.

The spelling of 113723266521 in words is "one hundred thirteen billion, seven hundred twenty-three million, two hundred sixty-six thousand, five hundred twenty-one".