80428722788 has 12 divisors (see below), whose sum is σ = 142143832572. Its totient is φ = 39816199200.

The previous prime is 80428722779. The next prime is 80428722851. The reversal of 80428722788 is 88722782408.

It can be written as a sum of positive squares in 2 ways, for example, as 79232116324 + 1196606464 = 281482^2 + 34592^2 .

It is a hoax number, since the sum of its digits (56) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 99540095 + ... + 99540902.

It is an arithmetic number, because the mean of its divisors is an integer number (11845319381).

Almost surely, 2^80428722788 is an apocalyptic number.

It is an amenable number.

80428722788 is a deficient number, since it is larger than the sum of its proper divisors (61715109784).

80428722788 is a wasteful number, since it uses less digits than its factorization.

80428722788 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 199081102 (or 199081100 counting only the distinct ones).

The product of its (nonzero) digits is 6422528, while the sum is 56.

The spelling of 80428722788 in words is "eighty billion, four hundred twenty-eight million, seven hundred twenty-two thousand, seven hundred eighty-eight".