80639983512 has 96 divisors (see below), whose sum is σ = 247078802880. Its totient is φ = 24436352160.

The previous prime is 80639983511. The next prime is 80639983537. The reversal of 80639983512 is 21538993608.

80639983512 is a `hidden beast` number, since 8 + 0 + 6 + 39 + 98 + 3 + 512 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80639983511) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1864138 + ... + 1906905.

It is an arithmetic number, because the mean of its divisors is an integer number (2573737530).

Almost surely, 2^80639983512 is an apocalyptic number.

It is an amenable number.

80639983512 is an abundant number, since it is smaller than the sum of its proper divisors (166438819368).

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

80639983512 is a wasteful number, since it uses less digits than its factorization.

80639983512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3771075 (or 3771059 counting only the distinct ones).

The product of its (nonzero) digits is 2799360, while the sum is 54.

The spelling of 80639983512 in words is "eighty billion, six hundred thirty-nine million, nine hundred eighty-three thousand, five hundred twelve".