79594648891 has 2 divisors, whose sum is σ = 79594648892. Its totient is φ = 79594648890.

The previous prime is 79594648853. The next prime is 79594648901. The reversal of 79594648891 is 19884649597.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 79594648891 - 2²³ = 79586260283 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 79594648891.

It is not a weakly prime, because it can be changed into another prime (79594148891) 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 as a sum of consecutive naturals, namely, 39797324445 + 39797324446.

It is an arithmetic number, because the mean of its divisors is an integer number (39797324446).

Almost surely, 2^79594648891 is an apocalyptic number.

79594648891 is a deficient number, since it is larger than the sum of its proper divisors (1).

79594648891 is an equidigital number, since it uses as much as digits as its factorization.

79594648891 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 156764160, while the sum is 70.

The spelling of 79594648891 in words is "seventy-nine billion, five hundred ninety-four million, six hundred forty-eight thousand, eight hundred ninety-one".