80982749279 has 4 divisors (see below), whose sum is σ = 81039660576. Its totient is φ = 80925837984.

The previous prime is 80982749251. The next prime is 80982749321. The reversal of 80982749279 is 97294728908.

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-80982749279 is a prime.

It is a super-3 number, since 3×80982749279³ (a number of 34 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80982743279) 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, 28453514 + ... + 28456359.

It is an arithmetic number, because the mean of its divisors is an integer number (20259915144).

Almost surely, 2^80982749279 is an apocalyptic number.

80982749279 is a deficient number, since it is larger than the sum of its proper divisors (56911297).

80982749279 is a wasteful number, since it uses less digits than its factorization.

80982749279 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56911296.

The product of its (nonzero) digits is 36578304, while the sum is 65.

The spelling of 80982749279 in words is "eighty billion, nine hundred eighty-two million, seven hundred forty-nine thousand, two hundred seventy-nine".