117910105640 has 64 divisors (see below), whose sum is σ = 271678492800. Its totient is φ = 46031392512.

The previous prime is 117910105637. The next prime is 117910105693. The reversal of 117910105640 is 46501019711.

It is a self number, because there is not a number n which added to its sum of digits gives 117910105640.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2242694 + ... + 2294666.

It is an arithmetic number, because the mean of its divisors is an integer number (4244976450).

Almost surely, 2^117910105640 is an apocalyptic number.

117910105640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 117910105640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (135839246400).

117910105640 is an abundant number, since it is smaller than the sum of its proper divisors (153768387160).

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

117910105640 is a wasteful number, since it uses less digits than its factorization.

117910105640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53346 (or 53342 counting only the distinct ones).

The product of its (nonzero) digits is 7560, while the sum is 35.

The spelling of 117910105640 in words is "one hundred seventeen billion, nine hundred ten million, one hundred five thousand, six hundred forty".