79771876843 has 4 divisors (see below), whose sum is σ = 79772705848. Its totient is φ = 79771047840.

The previous prime is 79771876739. The next prime is 79771876913. The reversal of 79771876843 is 34867817797.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 79771876843 - 2¹⁷ = 79771745771 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (79771876243) 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, 247821 + ... + 470062.

It is an arithmetic number, because the mean of its divisors is an integer number (19943176462).

Almost surely, 2^79771876843 is an apocalyptic number.

79771876843 is a deficient number, since it is larger than the sum of its proper divisors (829005).

79771876843 is a wasteful number, since it uses less digits than its factorization.

79771876843 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 829004.

The product of its digits is 99574272, while the sum is 67.

The spelling of 79771876843 in words is "seventy-nine billion, seven hundred seventy-one million, eight hundred seventy-six thousand, eight hundred forty-three".