80365213557 has 8 divisors (see below), whose sum is σ = 119059575680. Its totient is φ = 53576809020.

The previous prime is 80365213553. The next prime is 80365213571. The reversal of 80365213557 is 75531256308.

80365213557 is a `hidden beast` number, since 8 + 0 + 36 + 52 + 13 + 557 = 666.

It is not a de Polignac number, because 80365213557 - 2² = 80365213553 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80365213553) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1488244669 + ... + 1488244722.

It is an arithmetic number, because the mean of its divisors is an integer number (14882446960).

Almost surely, 2^80365213557 is an apocalyptic number.

It is an amenable number.

80365213557 is a deficient number, since it is larger than the sum of its proper divisors (38694362123).

80365213557 is a wasteful number, since it uses less digits than its factorization.

80365213557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2976489400 (or 2976489394 counting only the distinct ones).

The product of its (nonzero) digits is 756000, while the sum is 45.

The spelling of 80365213557 in words is "eighty billion, three hundred sixty-five million, two hundred thirteen thousand, five hundred fifty-seven".