80394566408 has 16 divisors (see below), whose sum is σ = 162335182380. Its totient is φ = 37105184448.

The previous prime is 80394566389. The next prime is 80394566423. The reversal of 80394566408 is 80466549308.

It can be written as a sum of positive squares in 2 ways, for example, as 77271768484 + 3122797924 = 277978^2 + 55882^2 .

It is a Smith number, since the sum of its digits (53) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 80394566408.

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, 386512235 + ... + 386512442.

Almost surely, 2^80394566408 is an apocalyptic number.

It is an amenable number.

80394566408 is an abundant number, since it is smaller than the sum of its proper divisors (81940615972).

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

80394566408 is a wasteful number, since it uses less digits than its factorization.

80394566408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 773024696 (or 773024692 counting only the distinct ones).

The product of its (nonzero) digits is 4976640, while the sum is 53.

The spelling of 80394566408 in words is "eighty billion, three hundred ninety-four million, five hundred sixty-six thousand, four hundred eight".