80175729665 has 8 divisors (see below), whose sum is σ = 96226038888. Its totient is φ = 64130474880.

The previous prime is 80175729653. The next prime is 80175729703. The reversal of 80175729665 is 56692757108.

It can be written as a sum of positive squares in 4 ways, for example, as 2723169856 + 77452559809 = 52184^2 + 278303^2 .

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

It is not a de Polignac number, because 80175729665 - 2¹² = 80175725569 is a prime.

It is a super-2 number, since 2×80175729665² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 80175729665.

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, 1228622 + ... + 1292231.

It is an arithmetic number, because the mean of its divisors is an integer number (12028254861).

Almost surely, 2^80175729665 is an apocalyptic number.

It is an amenable number.

80175729665 is a deficient number, since it is larger than the sum of its proper divisors (16050309223).

80175729665 is a wasteful number, since it uses less digits than its factorization.

80175729665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2527219.

The product of its (nonzero) digits is 6350400, while the sum is 56.

The spelling of 80175729665 in words is "eighty billion, one hundred seventy-five million, seven hundred twenty-nine thousand, six hundred sixty-five".