117291528838 has 24 divisors (see below), whose sum is σ = 193427960544. Its totient is φ = 53302658640.

The previous prime is 117291528769. The next prime is 117291528899. The reversal of 117291528838 is 838825192711.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1106820 + ... + 1208152.

It is an arithmetic number, because the mean of its divisors is an integer number (8059498356).

Almost surely, 2^117291528838 is an apocalyptic number.

117291528838 is a deficient number, since it is larger than the sum of its proper divisors (76136431706).

117291528838 is a wasteful number, since it uses less digits than its factorization.

117291528838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106140 (or 106129 counting only the distinct ones).

The product of its digits is 1935360, while the sum is 55.

The spelling of 117291528838 in words is "one hundred seventeen billion, two hundred ninety-one million, five hundred twenty-eight thousand, eight hundred thirty-eight".