80720939994 has 16 divisors (see below), whose sum is σ = 169938821280. Its totient is φ = 25490823120.

The previous prime is 80720939989. The next prime is 80720940007. The reversal of 80720939994 is 49993902708.

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, 354039097 + ... + 354039324.

It is an arithmetic number, because the mean of its divisors is an integer number (10621176330).

Almost surely, 2^80720939994 is an apocalyptic number.

80720939994 is an abundant number, since it is smaller than the sum of its proper divisors (89217881286).

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

80720939994 is a wasteful number, since it uses less digits than its factorization.

80720939994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 708078445.

The product of its (nonzero) digits is 8817984, while the sum is 60.

The spelling of 80720939994 in words is "eighty billion, seven hundred twenty million, nine hundred thirty-nine thousand, nine hundred ninety-four".