79566746421 has 8 divisors (see below), whose sum is σ = 106110220320. Its totient is φ = 53033885072.

The previous prime is 79566746401. The next prime is 79566746431. The reversal of 79566746421 is 12464766597.

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 79566746421 - 2¹⁹ = 79566222133 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79566746401) 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, 2635626 + ... + 2665643.

It is an arithmetic number, because the mean of its divisors is an integer number (13263777540).

Almost surely, 2^79566746421 is an apocalyptic number.

It is an amenable number.

79566746421 is a deficient number, since it is larger than the sum of its proper divisors (26543473899).

79566746421 is a wasteful number, since it uses less digits than its factorization.

79566746421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5306275.

The product of its digits is 15240960, while the sum is 57.

The spelling of 79566746421 in words is "seventy-nine billion, five hundred sixty-six million, seven hundred forty-six thousand, four hundred twenty-one".