80804468665 has 8 divisors (see below), whose sum is σ = 96967061640. Its totient is φ = 64642442112.

The previous prime is 80804468639. The next prime is 80804468729. The reversal of 80804468665 is 56686440808.

It can be written as a sum of positive squares in 4 ways, for example, as 47635681536 + 33168787129 = 218256^2 + 182123^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 80804468665 - 2²⁷ = 80670250937 is a prime.

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, 294157 + ... + 498133.

It is an arithmetic number, because the mean of its divisors is an integer number (12120882705).

Almost surely, 2^80804468665 is an apocalyptic number.

It is an amenable number.

80804468665 is a deficient number, since it is larger than the sum of its proper divisors (16162592975).

80804468665 is a wasteful number, since it uses less digits than its factorization.

80804468665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 283211.

The product of its (nonzero) digits is 8847360, while the sum is 55.

The spelling of 80804468665 in words is "eighty billion, eight hundred four million, four hundred sixty-eight thousand, six hundred sixty-five".