80591293857 has 32 divisors (see below), whose sum is σ = 112746412800. Its totient is φ = 51138920448.

The previous prime is 80591293843. The next prime is 80591293889. The reversal of 80591293857 is 75839219508.

It is not a de Polignac number, because 80591293857 - 2²² = 80587099553 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 80591293797 and 80591293806.

It is not an unprimeable number, because it can be changed into a prime (80591293837) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2150244 + ... + 2187402.

It is an arithmetic number, because the mean of its divisors is an integer number (3523325400).

Almost surely, 2^80591293857 is an apocalyptic number.

80591293857 is a gapful number since it is divisible by the number (87) formed by its first and last digit.

It is an amenable number.

80591293857 is a deficient number, since it is larger than the sum of its proper divisors (32155118943).

80591293857 is a wasteful number, since it uses less digits than its factorization.

80591293857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37545.

The product of its (nonzero) digits is 5443200, while the sum is 57.

The spelling of 80591293857 in words is "eighty billion, five hundred ninety-one million, two hundred ninety-three thousand, eight hundred fifty-seven".