117561565485 has 768 divisors, whose sum is σ = 300539289600. Its totient is φ = 42389028864.

The previous prime is 117561565481. The next prime is 117561565549. The reversal of 117561565485 is 584565165711.

117561565485 is a `hidden beast` number, since 1 + 1 + 7 + 5 + 6 + 156 + 5 + 485 = 666.

It is not a de Polignac number, because 117561565485 - 2² = 117561565481 is a prime.

Its product of digits (5040000) is a multiple of the sum of its prime divisors (160).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (117561565481) by changing a digit.

It is a polite number, since it can be written in 767 ways as a sum of consecutive naturals, for example, 2218142719 + ... + 2218142771.

It is an arithmetic number, because the mean of its divisors is an integer number (391327200).

Almost surely, 2^117561565485 is an apocalyptic number.

117561565485 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

117561565485 is an abundant number, since it is smaller than the sum of its proper divisors (182977724115).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

117561565485 is a wasteful number, since it uses less digits than its factorization.

117561565485 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 179 (or 160 counting only the distinct ones).

The product of its digits is 5040000, while the sum is 54.

It can be divided in two parts, 1175615 and 65485, that added together give a triangular number (1241100 = T₁₅₇₅).

The spelling of 117561565485 in words is "one hundred seventeen billion, five hundred sixty-one million, five hundred sixty-five thousand, four hundred eighty-five".