80661761914 has 16 divisors (see below), whose sum is σ = 125462144520. Its totient is φ = 38847654720.

The previous prime is 80661761899. The next prime is 80661761989. The reversal of 80661761914 is 41916716608.

It can be written as a sum of positive squares in 4 ways, for example, as 63671942889 + 16989819025 = 252333^2 + 130345^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1627269 + ... + 1676104.

Almost surely, 2^80661761914 is an apocalyptic number.

80661761914 is a deficient number, since it is larger than the sum of its proper divisors (44800382606).

80661761914 is a wasteful number, since it uses less digits than its factorization.

80661761914 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3303825.

The product of its (nonzero) digits is 435456, while the sum is 49.

The spelling of 80661761914 in words is "eighty billion, six hundred sixty-one million, seven hundred sixty-one thousand, nine hundred fourteen".