113645880169 has 4 divisors (see below), whose sum is σ = 113646775680. Its totient is φ = 113644984660.

The previous prime is 113645880149. The next prime is 113645880241. The reversal of 113645880169 is 961088546311.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 113645880169 - 2⁷ = 113645880041 is a prime.

It is a super-2 number, since 2×113645880169² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (113645880119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 218149 + ... + 524290.

It is an arithmetic number, because the mean of its divisors is an integer number (28411693920).

Almost surely, 2^113645880169 is an apocalyptic number.

It is an amenable number.

113645880169 is a deficient number, since it is larger than the sum of its proper divisors (895511).

113645880169 is an equidigital number, since it uses as much as digits as its factorization.

113645880169 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 895510.

The product of its (nonzero) digits is 1244160, while the sum is 52.

The spelling of 113645880169 in words is "one hundred thirteen billion, six hundred forty-five million, eight hundred eighty thousand, one hundred sixty-nine".