117294397578 has 24 divisors (see below), whose sum is σ = 255843490500. Its totient is φ = 38835728064.

The previous prime is 117294397481. The next prime is 117294397589. The reversal of 117294397578 is 875793492711.

117294397578 is a `hidden beast` number, since 1 + 1 + 7 + 29 + 4 + 39 + 7 + 578 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 110571545529 + 6722852049 = 332523^2 + 81993^2 .

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 11 ways as a sum of consecutive naturals, for example, 21864283 + ... + 21869646.

Almost surely, 2^117294397578 is an apocalyptic number.

117294397578 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

117294397578 is an abundant number, since it is smaller than the sum of its proper divisors (138549092922).

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

117294397578 is a wasteful number, since it uses less digits than its factorization.

117294397578 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43734086 (or 43734083 counting only the distinct ones).

The product of its digits is 26671680, while the sum is 63.

The spelling of 117294397578 in words is "one hundred seventeen billion, two hundred ninety-four million, three hundred ninety-seven thousand, five hundred seventy-eight".