79601728643 has 4 divisors (see below), whose sum is σ = 79706883600. Its totient is φ = 79496573688.

The previous prime is 79601728621. The next prime is 79601728691. The reversal of 79601728643 is 34682710697.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 79601728643 - 2²⁸ = 79333293187 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (79601728603) 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, 52576343 + ... + 52577856.

It is an arithmetic number, because the mean of its divisors is an integer number (19926720900).

Almost surely, 2^79601728643 is an apocalyptic number.

79601728643 is a deficient number, since it is larger than the sum of its proper divisors (105154957).

79601728643 is a wasteful number, since it uses less digits than its factorization.

79601728643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105154956.

The product of its (nonzero) digits is 3048192, while the sum is 53.

The spelling of 79601728643 in words is "seventy-nine billion, six hundred one million, seven hundred twenty-eight thousand, six hundred forty-three".