79638703231 has 2 divisors, whose sum is σ = 79638703232. Its totient is φ = 79638703230.

The previous prime is 79638703189. The next prime is 79638703247. The reversal of 79638703231 is 13230783697.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 79638703231 - 2⁹ = 79638702719 is a prime.

It is a super-2 number, since 2×79638703231² (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 (79638703631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39819351615 + 39819351616.

It is an arithmetic number, because the mean of its divisors is an integer number (39819351616).

Almost surely, 2^79638703231 is an apocalyptic number.

79638703231 is a deficient number, since it is larger than the sum of its proper divisors (1).

79638703231 is an equidigital number, since it uses as much as digits as its factorization.

79638703231 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1143072, while the sum is 49.

The spelling of 79638703231 in words is "seventy-nine billion, six hundred thirty-eight million, seven hundred three thousand, two hundred thirty-one".