80663489838 has 24 divisors (see below), whose sum is σ = 174859284600. Its totient is φ = 26874231504.

The previous prime is 80663489779. The next prime is 80663489843. The reversal of 80663489838 is 83898436608.

It is a Smith number, since the sum of its digits (63) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1096593 + ... + 1167836.

It is an arithmetic number, because the mean of its divisors is an integer number (7285803525).

Almost surely, 2^80663489838 is an apocalyptic number.

80663489838 is an abundant number, since it is smaller than the sum of its proper divisors (94195794762).

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

80663489838 is a wasteful number, since it uses less digits than its factorization.

80663489838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2266416 (or 2266413 counting only the distinct ones).

The product of its (nonzero) digits is 47775744, while the sum is 63.

The spelling of 80663489838 in words is "eighty billion, six hundred sixty-three million, four hundred eighty-nine thousand, eight hundred thirty-eight".