79796320369921 has 16 divisors (see below), whose sum is σ = 84768014320000. Its totient is φ = 74901836146176.

The previous prime is 79796320369903. The next prime is 79796320369939. The reversal of 79796320369921 is 12996302369797.

It is an interprime number because it is at equal distance from previous prime (79796320369903) and next prime (79796320369939).

It is a cyclic number.

It is not a de Polignac number, because 79796320369921 - 2¹¹ = 79796320367873 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (79796320369901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 157410100 + ... + 157916218.

It is an arithmetic number, because the mean of its divisors is an integer number (5298000895000).

Almost surely, 2^{79796320369921} is an apocalyptic number.

It is an amenable number.

79796320369921 is a deficient number, since it is larger than the sum of its proper divisors (4971693950079).

79796320369921 is a wasteful number, since it uses less digits than its factorization.

79796320369921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 582376.

The product of its (nonzero) digits is 416649744, while the sum is 73.

The spelling of 79796320369921 in words is "seventy-nine trillion, seven hundred ninety-six billion, three hundred twenty million, three hundred sixty-nine thousand, nine hundred twenty-one".