79193894431 has 2 divisors, whose sum is σ = 79193894432. Its totient is φ = 79193894430.

The previous prime is 79193894413. The next prime is 79193894449. The reversal of 79193894431 is 13449839197.

Together with previous prime (79193894413) it forms an Ormiston pair, because they use the same digits, order apart.

It is a balanced prime because it is at equal distance from previous prime (79193894413) and next prime (79193894449).

It is a cyclic number.

It is not a de Polignac number, because 79193894431 - 2¹¹ = 79193892383 is a prime.

It is a super-2 number, since 2×79193894431² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (79193894401) 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, 39596947215 + 39596947216.

It is an arithmetic number, because the mean of its divisors is an integer number (39596947216).

Almost surely, 2^79193894431 is an apocalyptic number.

79193894431 is a deficient number, since it is larger than the sum of its proper divisors (1).

79193894431 is an equidigital number, since it uses as much as digits as its factorization.

79193894431 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5878656, while the sum is 58.

The spelling of 79193894431 in words is "seventy-nine billion, one hundred ninety-three million, eight hundred ninety-four thousand, four hundred thirty-one".