78519913132812 has 48 divisors (see below), whose sum is σ = 191189924862720. Its totient is φ = 25033893369408.

The previous prime is 78519913132811. The next prime is 78519913132853. The reversal of 78519913132812 is 21823131991587.

It is not an unprimeable number, because it can be changed into a prime (78519913132811) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3380878 + ... + 12979605.

It is an arithmetic number, because the mean of its divisors is an integer number (3983123434640).

Almost surely, 2^{78519913132812} is an apocalyptic number.

It is an amenable number.

78519913132812 is an abundant number, since it is smaller than the sum of its proper divisors (112670011729908).

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

78519913132812 is a wasteful number, since it uses less digits than its factorization.

78519913132812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16377902 (or 16377900 counting only the distinct ones).

The product of its digits is 6531840, while the sum is 60.

The spelling of 78519913132812 in words is "seventy-eight trillion, five hundred nineteen billion, nine hundred thirteen million, one hundred thirty-two thousand, eight hundred twelve".