117809578756 has 9 divisors (see below), whose sum is σ = 206167964149. Its totient is φ = 58904446144.

The previous prime is 117809578729. The next prime is 117809578829. The reversal of 117809578756 is 657875908711.

The square root of 117809578756 is 343234.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 89982000900 + 27827577856 = 299970^2 + 166816^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 600660 + ... + 772276.

Almost surely, 2^117809578756 is an apocalyptic number.

117809578756 is the 343234-th square number.

It is an amenable number.

117809578756 is a deficient number, since it is larger than the sum of its proper divisors (88358385393).

117809578756 is an frugal number, since it uses more digits than its factorization.

117809578756 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 343238 (or 171619 counting only the distinct ones).

The product of its (nonzero) digits is 29635200, while the sum is 64.

Multiplying 117809578756 by its sum of digits (64), we get a square (7539813040384 = 2745872²).

The spelling of 117809578756 in words is "one hundred seventeen billion, eight hundred nine million, five hundred seventy-eight thousand, seven hundred fifty-six".