117777788640 has 96 divisors (see below), whose sum is σ = 412222275360. Its totient is φ = 31407409152.

The previous prime is 117777788633. The next prime is 117777788669. The reversal of 117777788640 is 46887777711.

It is a tau number, because it is divible by the number of its divisors (96).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13627369 + ... + 13636008.

It is an arithmetic number, because the mean of its divisors is an integer number (4293982035).

Almost surely, 2^117777788640 is an apocalyptic number.

117777788640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

117777788640 is an abundant number, since it is smaller than the sum of its proper divisors (294444486720).

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

117777788640 is a wasteful number, since it uses less digits than its factorization.

117777788640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27263401 (or 27263387 counting only the distinct ones).

The product of its (nonzero) digits is 25815552, while the sum is 63.

The spelling of 117777788640 in words is "one hundred seventeen billion, seven hundred seventy-seven million, seven hundred eighty-eight thousand, six hundred forty".