80539671602879 has 4 divisors (see below), whose sum is σ = 80697902785320. Its totient is φ = 80381440420440.

The previous prime is 80539671602851. The next prime is 80539671602891. The reversal of 80539671602879 is 97820617693508.

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

It is a cyclic number.

It is not a de Polignac number, because 80539671602879 - 2⁸ = 80539671602623 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 (80539671602179) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 79115590457 + ... + 79115591474.

It is an arithmetic number, because the mean of its divisors is an integer number (20174475696330).

Almost surely, 2^{80539671602879} is an apocalyptic number.

80539671602879 is a deficient number, since it is larger than the sum of its proper divisors (158231182441).

80539671602879 is a wasteful number, since it uses less digits than its factorization.

80539671602879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158231182440.

The product of its (nonzero) digits is 274337280, while the sum is 71.

The spelling of 80539671602879 in words is "eighty trillion, five hundred thirty-nine billion, six hundred seventy-one million, six hundred two thousand, eight hundred seventy-nine".