79210130323021 has 4 divisors (see below), whose sum is σ = 81765295817344. Its totient is φ = 76654964828700.

The previous prime is 79210130323007. The next prime is 79210130323061. The reversal of 79210130323021 is 12032303101297.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 79210130323021 - 2¹⁷ = 79210130191949 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79210130323061) 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, 1277582747115 + ... + 1277582747176.

It is an arithmetic number, because the mean of its divisors is an integer number (20441323954336).

Almost surely, 2^{79210130323021} is an apocalyptic number.

It is an amenable number.

79210130323021 is a deficient number, since it is larger than the sum of its proper divisors (2555165494323).

79210130323021 is a wasteful number, since it uses less digits than its factorization.

79210130323021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2555165494322.

The product of its (nonzero) digits is 13608, while the sum is 34.

The spelling of 79210130323021 in words is "seventy-nine trillion, two hundred ten billion, one hundred thirty million, three hundred twenty-three thousand, twenty-one".