80397974737 has 4 divisors (see below), whose sum is σ = 83893538880. Its totient is φ = 76902410596.

The previous prime is 80397974731. The next prime is 80397974773. The reversal of 80397974737 is 73747979308.

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 80397974737 - 2⁷ = 80397974609 is a prime.

It is a super-2 number, since 2×80397974737² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (80397974731) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1747782037 + ... + 1747782082.

It is an arithmetic number, because the mean of its divisors is an integer number (20973384720).

Almost surely, 2^80397974737 is an apocalyptic number.

It is an amenable number.

80397974737 is a deficient number, since it is larger than the sum of its proper divisors (3495564143).

80397974737 is a wasteful number, since it uses less digits than its factorization.

80397974737 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3495564142.

The product of its (nonzero) digits is 56010528, while the sum is 64.

The spelling of 80397974737 in words is "eighty billion, three hundred ninety-seven million, nine hundred seventy-four thousand, seven hundred thirty-seven".