76985680872 has 32 divisors (see below), whose sum is σ = 193471879680. Its totient is φ = 25527536640.

The previous prime is 76985680859. The next prime is 76985680883. The reversal of 76985680872 is 27808658967.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8392633 + ... + 8401800.

It is an arithmetic number, because the mean of its divisors is an integer number (6045996240).

Almost surely, 2^76985680872 is an apocalyptic number.

It is an amenable number.

76985680872 is an abundant number, since it is smaller than the sum of its proper divisors (116486198808).

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

76985680872 is a wasteful number, since it uses less digits than its factorization.

76985680872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16794633 (or 16794629 counting only the distinct ones).

The product of its (nonzero) digits is 81285120, while the sum is 66.

The spelling of 76985680872 in words is "seventy-six billion, nine hundred eighty-five million, six hundred eighty thousand, eight hundred seventy-two".