78813885858756 has 96 divisors (see below), whose sum is σ = 206954855976960. Its totient is φ = 23197137467904.

The previous prime is 78813885858727. The next prime is 78813885858779. The reversal of 78813885858756 is 65785858831887.

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 31 ways as a sum of consecutive naturals, for example, 98308636 + ... + 99107091.

It is an arithmetic number, because the mean of its divisors is an integer number (2155779749760).

Almost surely, 2^{78813885858756} is an apocalyptic number.

78813885858756 is a gapful number since it is divisible by the number (76) formed by its first and last digit.

It is an amenable number.

78813885858756 is an abundant number, since it is smaller than the sum of its proper divisors (128140970118204).

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

78813885858756 is a wasteful number, since it uses less digits than its factorization.

78813885858756 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 197415873 (or 197415871 counting only the distinct ones).

The product of its digits is 28901376000, while the sum is 87.

The spelling of 78813885858756 in words is "seventy-eight trillion, eight hundred thirteen billion, eight hundred eighty-five million, eight hundred fifty-eight thousand, seven hundred fifty-six".