79083771391 has 2 divisors, whose sum is σ = 79083771392. Its totient is φ = 79083771390.

The previous prime is 79083771359. The next prime is 79083771397. The reversal of 79083771391 is 19317738097.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 79083771391 - 2⁵ = 79083771359 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (79083771397) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39541885695 + 39541885696.

It is an arithmetic number, because the mean of its divisors is an integer number (39541885696).

Almost surely, 2^79083771391 is an apocalyptic number.

79083771391 is a deficient number, since it is larger than the sum of its proper divisors (1).

79083771391 is an equidigital number, since it uses as much as digits as its factorization.

79083771391 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2000376, while the sum is 55.

The spelling of 79083771391 in words is "seventy-nine billion, eighty-three million, seven hundred seventy-one thousand, three hundred ninety-one".