79943857967 has 8 divisors (see below), whose sum is σ = 80163317520. Its totient is φ = 79724470720.

The previous prime is 79943857963. The next prime is 79943858009. The reversal of 79943857967 is 76975834997.

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 79943857967 - 2² = 79943857963 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 79943857894 and 79943857903.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79943857963) 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, 2783792 + ... + 2812362.

It is an arithmetic number, because the mean of its divisors is an integer number (10020414690).

Almost surely, 2^79943857967 is an apocalyptic number.

79943857967 is a deficient number, since it is larger than the sum of its proper divisors (219459553).

79943857967 is a wasteful number, since it uses less digits than its factorization.

79943857967 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36153.

The product of its digits is 720135360, while the sum is 74.

The spelling of 79943857967 in words is "seventy-nine billion, nine hundred forty-three million, eight hundred fifty-seven thousand, nine hundred sixty-seven".