80779049971 has 8 divisors (see below), whose sum is σ = 82870455024. Its totient is φ = 78693415680.

The previous prime is 80779049969. The next prime is 80779050013. The reversal of 80779049971 is 17994097708.

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

It is a cyclic number.

It is not a de Polignac number, because 80779049971 - 2¹ = 80779049969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (80779049921) 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, 1414326 + ... + 1470331.

It is an arithmetic number, because the mean of its divisors is an integer number (10358806878).

Almost surely, 2^80779049971 is an apocalyptic number.

80779049971 is a deficient number, since it is larger than the sum of its proper divisors (2091405053).

80779049971 is a wasteful number, since it uses less digits than its factorization.

80779049971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2885381.

The product of its (nonzero) digits is 8001504, while the sum is 61.

The spelling of 80779049971 in words is "eighty billion, seven hundred seventy-nine million, forty-nine thousand, nine hundred seventy-one".