117045523638 has 32 divisors (see below), whose sum is σ = 263983278720. Its totient is φ = 38432857320.

The previous prime is 117045523619. The next prime is 117045523667. The reversal of 117045523638 is 836325540711.

It is a happy number.

117045523638 is a `hidden beast` number, since 1 + 1 + 7 + 0 + 4 + 5 + 5 + 2 + 3 + 638 = 666.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 117045523593 and 117045523602.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 16171828 + ... + 16179063.

It is an arithmetic number, because the mean of its divisors is an integer number (8249477460).

Almost surely, 2^117045523638 is an apocalyptic number.

117045523638 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

117045523638 is an abundant number, since it is smaller than the sum of its proper divisors (146937755082).

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

117045523638 is a wasteful number, since it uses less digits than its factorization.

117045523638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32350969 (or 32350963 counting only the distinct ones).

The product of its (nonzero) digits is 604800, while the sum is 45.

The spelling of 117045523638 in words is "one hundred seventeen billion, forty-five million, five hundred twenty-three thousand, six hundred thirty-eight".