117431642478 has 192 divisors, whose sum is σ = 270908064000. Its totient is φ = 33793740288.

The previous prime is 117431642467. The next prime is 117431642513. The reversal of 117431642478 is 874246134711.

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 95 ways as a sum of consecutive naturals, for example, 145156138 + ... + 145156946.

It is an arithmetic number, because the mean of its divisors is an integer number (1410979500).

Almost surely, 2^117431642478 is an apocalyptic number.

117431642478 is an abundant number, since it is smaller than the sum of its proper divisors (153476421522).

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

117431642478 is a wasteful number, since it uses less digits than its factorization.

117431642478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 991 (or 968 counting only the distinct ones).

The product of its digits is 903168, while the sum is 48.

The spelling of 117431642478 in words is "one hundred seventeen billion, four hundred thirty-one million, six hundred forty-two thousand, four hundred seventy-eight".