79136841100321 has 3 divisors (see below), whose sum is σ = 79136849996211. Its totient is φ = 79136832204432.

The previous prime is 79136841100307. The next prime is 79136841100379. The reversal of 79136841100321 is 12300114863197.

The square root of 79136841100321 is 8895889.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 48651866557921 + 30484974542400 = 6975089^2 + 5521320^2 .

It is not a de Polignac number, because 79136841100321 - 2¹⁵ = 79136841067553 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (79136841109321) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 4447945 + ... + 13343833.

It is an arithmetic number, because the mean of its divisors is an integer number (26378949998737).

Almost surely, 2^{79136841100321} is an apocalyptic number.

79136841100321 is the 8895889-th square number.

79136841100321 is the 4447945-th centered octagonal number.

It is an amenable number.

79136841100321 is a deficient number, since it is larger than the sum of its proper divisors (8895890).

79136841100321 is an frugal number, since it uses more digits than its factorization.

79136841100321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17791778 (or 8895889 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 46.

The spelling of 79136841100321 in words is "seventy-nine trillion, one hundred thirty-six billion, eight hundred forty-one million, one hundred thousand, three hundred twenty-one".