117309154640 has 40 divisors (see below), whose sum is σ = 272780695680. Its totient is φ = 46917311616.

The previous prime is 117309154597. The next prime is 117309154657. The reversal of 117309154640 is 46451903711.

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×117309154640² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 519581 + ... + 710339.

It is an arithmetic number, because the mean of its divisors is an integer number (6819517392).

Almost surely, 2^117309154640 is an apocalyptic number.

117309154640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

117309154640 is an abundant number, since it is smaller than the sum of its proper divisors (155471541040).

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

117309154640 is a wasteful number, since it uses less digits than its factorization.

117309154640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 198459 (or 198453 counting only the distinct ones).

The product of its (nonzero) digits is 90720, while the sum is 41.

The spelling of 117309154640 in words is "one hundred seventeen billion, three hundred nine million, one hundred fifty-four thousand, six hundred forty".