80620720704 has 42 divisors (see below), whose sum is σ = 231084741030. Its totient is φ = 26873573376.

The previous prime is 80620720639. The next prime is 80620720727. The reversal of 80620720704 is 40702702608.

80620720704 is a `hidden beast` number, since 8 + 0 + 620 + 7 + 20 + 7 + 0 + 4 = 666.

It can be written as a sum of positive squares in only one way, i.e., 72925922304 + 7694798400 = 270048^2 + 87720^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 69982689 + ... + 69983840.

Almost surely, 2^80620720704 is an apocalyptic number.

It is an amenable number.

80620720704 is an abundant number, since it is smaller than the sum of its proper divisors (150464020326).

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

80620720704 is a wasteful number, since it uses less digits than its factorization.

80620720704 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139966547 (or 139966534 counting only the distinct ones).

The product of its (nonzero) digits is 37632, while the sum is 36.

The spelling of 80620720704 in words is "eighty billion, six hundred twenty million, seven hundred twenty thousand, seven hundred four".