79804372621 has 8 divisors (see below), whose sum is σ = 80159751360. Its totient is φ = 79449104352.

The previous prime is 79804372619. The next prime is 79804372639. The reversal of 79804372621 is 12627340897.

It is a happy number.

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 79804372621 - 2¹ = 79804372619 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 (79804372421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1644126 + ... + 1691968.

It is an arithmetic number, because the mean of its divisors is an integer number (10019968920).

Almost surely, 2^79804372621 is an apocalyptic number.

It is an amenable number.

79804372621 is a deficient number, since it is larger than the sum of its proper divisors (355378739).

79804372621 is a wasteful number, since it uses less digits than its factorization.

79804372621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55235.

The product of its (nonzero) digits is 1016064, while the sum is 49.

The spelling of 79804372621 in words is "seventy-nine billion, eight hundred four million, three hundred seventy-two thousand, six hundred twenty-one".