79282521864893 has 2 divisors, whose sum is σ = 79282521864894. Its totient is φ = 79282521864892.

The previous prime is 79282521864883. The next prime is 79282521864907. The reversal of 79282521864893 is 39846812528297.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 47360451263449 + 31922070601444 = 6881893^2 + 5649962^2 .

It is an emirp because it is prime and its reverse (39846812528297) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 79282521864893 - 2³⁶ = 79213802388157 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 79282521864893.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (79282521864883) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39641260932446 + 39641260932447.

It is an arithmetic number, because the mean of its divisors is an integer number (39641260932447).

Almost surely, 2^{79282521864893} is an apocalyptic number.

It is an amenable number.

79282521864893 is a deficient number, since it is larger than the sum of its proper divisors (1).

79282521864893 is an equidigital number, since it uses as much as digits as its factorization.

79282521864893 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 836075520, while the sum is 74.

The spelling of 79282521864893 in words is "seventy-nine trillion, two hundred eighty-two billion, five hundred twenty-one million, eight hundred sixty-four thousand, eight hundred ninety-three".