117595217820 has 48 divisors (see below), whose sum is σ = 329316815520. Its totient is φ = 31353943296.

The previous prime is 117595217809. The next prime is 117595217843. The reversal of 117595217820 is 28712595711.

It is a self number, because there is not a number n which added to its sum of digits gives 117595217820.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 256474 + ... + 548606.

It is an arithmetic number, because the mean of its divisors is an integer number (6860766990).

Almost surely, 2^117595217820 is an apocalyptic number.

117595217820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

117595217820 is an abundant number, since it is smaller than the sum of its proper divisors (211721597700).

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

117595217820 is a wasteful number, since it uses less digits than its factorization.

117595217820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 298854 (or 298852 counting only the distinct ones).

The product of its (nonzero) digits is 352800, while the sum is 48.

The spelling of 117595217820 in words is "one hundred seventeen billion, five hundred ninety-five million, two hundred seventeen thousand, eight hundred twenty".