117842511663 has 20 divisors (see below), whose sum is σ = 176591702760. Its totient is φ = 78313828752.

The previous prime is 117842511659. The next prime is 117842511673. The reversal of 117842511663 is 366115248711.

117842511663 is a `hidden beast` number, since 1 + 1 + 78 + 4 + 2 + 511 + 6 + 63 = 666.

It is not a de Polignac number, because 117842511663 - 2² = 117842511659 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (117842511623) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 2269033 + ... + 2320386.

It is an arithmetic number, because the mean of its divisors is an integer number (8829585138).

Almost surely, 2^117842511663 is an apocalyptic number.

117842511663 is a deficient number, since it is larger than the sum of its proper divisors (58749191097).

117842511663 is an equidigital number, since it uses as much as digits as its factorization.

117842511663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4589748 (or 4589739 counting only the distinct ones).

The product of its digits is 241920, while the sum is 45.

The spelling of 117842511663 in words is "one hundred seventeen billion, eight hundred forty-two million, five hundred eleven thousand, six hundred sixty-three".