80001572857 has 4 divisors (see below), whose sum is σ = 80749251216. Its totient is φ = 79253894500.

The previous prime is 80001572839. The next prime is 80001572927. The reversal of 80001572857 is 75827510008.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 80001572857 - 2¹¹ = 80001570809 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (80001572837) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 373839019 + ... + 373839232.

It is an arithmetic number, because the mean of its divisors is an integer number (20187312804).

Almost surely, 2^80001572857 is an apocalyptic number.

It is an amenable number.

80001572857 is a deficient number, since it is larger than the sum of its proper divisors (747678359).

80001572857 is a wasteful number, since it uses less digits than its factorization.

80001572857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 747678358.

The product of its (nonzero) digits is 156800, while the sum is 43.

The spelling of 80001572857 in words is "eighty billion, one million, five hundred seventy-two thousand, eight hundred fifty-seven".