79193894401 has 2 divisors, whose sum is σ = 79193894402. Its totient is φ = 79193894400.

The previous prime is 79193894369. The next prime is 79193894413. The reversal of 79193894401 is 10449839197.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 44351938801 + 34841955600 = 210599^2 + 186660^2 .

It is a cyclic number.

It is not a de Polignac number, because 79193894401 - 2⁵ = 79193894369 is a prime.

It is not a weakly prime, because it can be changed into another prime (79193894431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39596947200 + 39596947201.

It is an arithmetic number, because the mean of its divisors is an integer number (39596947201).

Almost surely, 2^79193894401 is an apocalyptic number.

It is an amenable number.

79193894401 is a deficient number, since it is larger than the sum of its proper divisors (1).

79193894401 is an equidigital number, since it uses as much as digits as its factorization.

79193894401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1959552, while the sum is 55.

The spelling of 79193894401 in words is "seventy-nine billion, one hundred ninety-three million, eight hundred ninety-four thousand, four hundred one".