76990859856 has 160 divisors (see below), whose sum is σ = 223171787520. Its totient is φ = 25411769856.

The previous prime is 76990859839. The next prime is 76990859863. The reversal of 76990859856 is 65895809967.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 19653610 + ... + 19657526.

It is an arithmetic number, because the mean of its divisors is an integer number (1394823672).

Almost surely, 2^76990859856 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 76990859856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (111585893760).

76990859856 is an abundant number, since it is smaller than the sum of its proper divisors (146180927664).

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

76990859856 is a wasteful number, since it uses less digits than its factorization.

76990859856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4370 (or 4358 counting only the distinct ones).

The product of its (nonzero) digits is 293932800, while the sum is 72.

The spelling of 76990859856 in words is "seventy-six billion, nine hundred ninety million, eight hundred fifty-nine thousand, eight hundred fifty-six".