79646816013 has 8 divisors (see below), whose sum is σ = 109065910368. Its totient is φ = 51662799504.

The previous prime is 79646815993. The next prime is 79646816063. The reversal of 79646816013 is 31061864697.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 79646816013 - 2⁸ = 79646815757 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79646816063) 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 7 ways as a sum of consecutive naturals, for example, 358769331 + ... + 358769552.

It is an arithmetic number, because the mean of its divisors is an integer number (13633238796).

Almost surely, 2^79646816013 is an apocalyptic number.

It is an amenable number.

79646816013 is a deficient number, since it is larger than the sum of its proper divisors (29419094355).

79646816013 is a wasteful number, since it uses less digits than its factorization.

79646816013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 717538923.

The product of its (nonzero) digits is 1306368, while the sum is 51.

The spelling of 79646816013 in words is "seventy-nine billion, six hundred forty-six million, eight hundred sixteen thousand, thirteen".