79638711727 has 2 divisors, whose sum is σ = 79638711728. Its totient is φ = 79638711726.

The previous prime is 79638711701. The next prime is 79638711773. The reversal of 79638711727 is 72711783697.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 79638711727 - 2⁷ = 79638711599 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (79638711127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39819355863 + 39819355864.

It is an arithmetic number, because the mean of its divisors is an integer number (39819355864).

Almost surely, 2^79638711727 is an apocalyptic number.

79638711727 is a deficient number, since it is larger than the sum of its proper divisors (1).

79638711727 is an equidigital number, since it uses as much as digits as its factorization.

79638711727 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6223392, while the sum is 58.

The spelling of 79638711727 in words is "seventy-nine billion, six hundred thirty-eight million, seven hundred eleven thousand, seven hundred twenty-seven".