80239939761 has 16 divisors (see below), whose sum is σ = 110290345920. Its totient is φ = 51866254080.

The previous prime is 80239939757. The next prime is 80239939763. The reversal of 80239939761 is 16793993208.

It is not a de Polignac number, because 80239939761 - 2² = 80239939757 is a prime.

It is not an unprimeable number, because it can be changed into a prime (80239939763) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3092100 + ... + 3117941.

It is an arithmetic number, because the mean of its divisors is an integer number (6893146620).

Almost surely, 2^80239939761 is an apocalyptic number.

It is an amenable number.

80239939761 is a deficient number, since it is larger than the sum of its proper divisors (30050406159).

80239939761 is a wasteful number, since it uses less digits than its factorization.

80239939761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6210176.

The product of its (nonzero) digits is 4408992, while the sum is 57.

The spelling of 80239939761 in words is "eighty billion, two hundred thirty-nine million, nine hundred thirty-nine thousand, seven hundred sixty-one".