80817697616 has 20 divisors (see below), whose sum is σ = 156637227552. Its totient is φ = 40395187296.

The previous prime is 80817697579. The next prime is 80817697633. The reversal of 80817697616 is 61679671808.

It is a congruent number.

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, 804956 + ... + 899771.

Almost surely, 2^80817697616 is an apocalyptic number.

It is an amenable number.

80817697616 is a deficient number, since it is larger than the sum of its proper divisors (75819529936).

80817697616 is a wasteful number, since it uses less digits than its factorization.

80817697616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1707698 (or 1707692 counting only the distinct ones).

The product of its (nonzero) digits is 6096384, while the sum is 59.

The spelling of 80817697616 in words is "eighty billion, eight hundred seventeen million, six hundred ninety-seven thousand, six hundred sixteen".