79615412389 has 8 divisors (see below), whose sum is σ = 80773519680. Its totient is φ = 78465667296.

The previous prime is 79615412377. The next prime is 79615412477. The reversal of 79615412389 is 98321451697.

It is a happy number.

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 79615412389 - 2⁹ = 79615411877 is a prime.

It is a super-2 number, since 2×79615412389² (a number of 23 digits) contains 22 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 (79615412369) 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, 2071369 + ... + 2109454.

It is an arithmetic number, because the mean of its divisors is an integer number (10096689960).

Almost surely, 2^79615412389 is an apocalyptic number.

It is an amenable number.

79615412389 is a deficient number, since it is larger than the sum of its proper divisors (1158107291).

79615412389 is a wasteful number, since it uses less digits than its factorization.

79615412389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4181099.

The product of its digits is 3265920, while the sum is 55.

The spelling of 79615412389 in words is "seventy-nine billion, six hundred fifteen million, four hundred twelve thousand, three hundred eighty-nine".