80781930771 has 8 divisors (see below), whose sum is σ = 107776523664. Its totient is φ = 53820979200.

The previous prime is 80781930739. The next prime is 80781930833. The reversal of 80781930771 is 17703918708.

It is a happy number.

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

It is not a de Polignac number, because 80781930771 - 2⁵ = 80781930739 is a prime.

It is not an unprimeable number, because it can be changed into a prime (80781930571) 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, 8404726 + ... + 8414331.

It is an arithmetic number, because the mean of its divisors is an integer number (13472065458).

Almost surely, 2^80781930771 is an apocalyptic number.

80781930771 is a deficient number, since it is larger than the sum of its proper divisors (26994592893).

80781930771 is a wasteful number, since it uses less digits than its factorization.

80781930771 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16820661.

The product of its (nonzero) digits is 592704, while the sum is 51.

The spelling of 80781930771 in words is "eighty billion, seven hundred eighty-one million, nine hundred thirty thousand, seven hundred seventy-one".