79817911489 has 8 divisors (see below), whose sum is σ = 81859911840. Its totient is φ = 77780445600.

The previous prime is 79817911483. The next prime is 79817911493. The reversal of 79817911489 is 98411971897.

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 79817911489 - 2⁷ = 79817911361 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 79817911489.

It is not an unprimeable number, because it can be changed into a prime (79817911483) 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, 1097947 + ... + 1168384.

It is an arithmetic number, because the mean of its divisors is an integer number (10232488980).

Almost surely, 2^79817911489 is an apocalyptic number.

It is an amenable number.

79817911489 is a deficient number, since it is larger than the sum of its proper divisors (2042000351).

79817911489 is a wasteful number, since it uses less digits than its factorization.

79817911489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2267231.

The product of its digits is 9144576, while the sum is 64.

The spelling of 79817911489 in words is "seventy-nine billion, eight hundred seventeen million, nine hundred eleven thousand, four hundred eighty-nine".