80642066808 has 64 divisors (see below), whose sum is σ = 203495362560. Its totient is φ = 26629295616.

The previous prime is 80642066801. The next prime is 80642066809. The reversal of 80642066808 is 80866024608.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80642066801) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2062416 + ... + 2101152.

It is an arithmetic number, because the mean of its divisors is an integer number (3179615040).

Almost surely, 2^80642066808 is an apocalyptic number.

It is an amenable number.

80642066808 is an abundant number, since it is smaller than the sum of its proper divisors (122853295752).

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

80642066808 is a wasteful number, since it uses less digits than its factorization.

80642066808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39556 (or 39552 counting only the distinct ones).

The product of its (nonzero) digits is 884736, while the sum is 48.

The spelling of 80642066808 in words is "eighty billion, six hundred forty-two million, sixty-six thousand, eight hundred eight".