80976188191 has 4 divisors (see below), whose sum is σ = 81019331352. Its totient is φ = 80933045032.

The previous prime is 80976188119. The next prime is 80976188233. The reversal of 80976188191 is 19188167908.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-80976188191 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 (80976189191) 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, 21568765 + ... + 21572518.

It is an arithmetic number, because the mean of its divisors is an integer number (20254832838).

Almost surely, 2^80976188191 is an apocalyptic number.

80976188191 is a deficient number, since it is larger than the sum of its proper divisors (43143161).

80976188191 is a wasteful number, since it uses less digits than its factorization.

80976188191 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43143160.

The product of its (nonzero) digits is 1741824, while the sum is 58.

The spelling of 80976188191 in words is "eighty billion, nine hundred seventy-six million, one hundred eighty-eight thousand, one hundred ninety-one".