80791991137 has 8 divisors (see below), whose sum is σ = 94916465280. Its totient is φ = 67797474960.

The previous prime is 80791991113. The next prime is 80791991143. The reversal of 80791991137 is 73119919708.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-80791991137 is a prime.

It is not an unprimeable number, because it can be changed into a prime (80791991437) 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, 282489337 + ... + 282489622.

It is an arithmetic number, because the mean of its divisors is an integer number (11864558160).

Almost surely, 2^80791991137 is an apocalyptic number.

It is an amenable number.

80791991137 is a deficient number, since it is larger than the sum of its proper divisors (14124474143).

80791991137 is a wasteful number, since it uses less digits than its factorization.

80791991137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 564978983.

The product of its (nonzero) digits is 857304, while the sum is 55.

The spelling of 80791991137 in words is "eighty billion, seven hundred ninety-one million, nine hundred ninety-one thousand, one hundred thirty-seven".