79182666521 has 8 divisors (see below), whose sum is σ = 95817680640. Its totient is φ = 63878453568.

The previous prime is 79182666517. The next prime is 79182666529. The reversal of 79182666521 is 12566628197.

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 79182666521 - 2² = 79182666517 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (79182666529) 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, 332700161 + ... + 332700398.

It is an arithmetic number, because the mean of its divisors is an integer number (11977210080).

Almost surely, 2^79182666521 is an apocalyptic number.

It is an amenable number.

79182666521 is a deficient number, since it is larger than the sum of its proper divisors (16635014119).

79182666521 is a wasteful number, since it uses less digits than its factorization.

79182666521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 665400583.

The product of its digits is 2177280, while the sum is 53.

The spelling of 79182666521 in words is "seventy-nine billion, one hundred eighty-two million, six hundred sixty-six thousand, five hundred twenty-one".