117897571768 has 8 divisors (see below), whose sum is σ = 221057947080. Its totient is φ = 58948785880.

The previous prime is 117897571733. The next prime is 117897571829. The reversal of 117897571768 is 867175798711.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7368598228 + ... + 7368598243.

It is an arithmetic number, because the mean of its divisors is an integer number (27632243385).

Almost surely, 2^117897571768 is an apocalyptic number.

It is an amenable number.

117897571768 is a deficient number, since it is larger than the sum of its proper divisors (103160375312).

117897571768 is a wasteful number, since it uses less digits than its factorization.

117897571768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14737196477 (or 14737196473 counting only the distinct ones).

The product of its digits is 41489280, while the sum is 67.

The spelling of 117897571768 in words is "one hundred seventeen billion, eight hundred ninety-seven million, five hundred seventy-one thousand, seven hundred sixty-eight".