113609921049 has 12 divisors (see below), whose sum is σ = 164155840212. Its totient is φ = 75715660800.

The previous prime is 113609921023. The next prime is 113609921057. The reversal of 113609921049 is 940129906311.

113609921049 is a `hidden beast` number, since 1 + 13 + 609 + 9 + 21 + 0 + 4 + 9 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 12019833225 + 101590087824 = 109635^2 + 318732^2 .

It is not a de Polignac number, because 113609921049 - 2⁵ = 113609921017 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 113609920995 and 113609921013.

It is not an unprimeable number, because it can be changed into a prime (113609921069) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1994232 + ... + 2050409.

It is an arithmetic number, because the mean of its divisors is an integer number (13679653351).

Almost surely, 2^113609921049 is an apocalyptic number.

It is an amenable number.

113609921049 is a deficient number, since it is larger than the sum of its proper divisors (50545919163).

113609921049 is a wasteful number, since it uses less digits than its factorization.

113609921049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4047768 (or 4047765 counting only the distinct ones).

The product of its (nonzero) digits is 104976, while the sum is 45.

The spelling of 113609921049 in words is "one hundred thirteen billion, six hundred nine million, nine hundred twenty-one thousand, forty-nine".