79638703247 has 2 divisors, whose sum is σ = 79638703248. Its totient is φ = 79638703246.

The previous prime is 79638703231. The next prime is 79638703253. The reversal of 79638703247 is 74230783697.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 79638703247 - 2⁴ = 79638703231 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 79638703192 and 79638703201.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (79638703747) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39819351623 + 39819351624.

It is an arithmetic number, because the mean of its divisors is an integer number (39819351624).

Almost surely, 2^79638703247 is an apocalyptic number.

79638703247 is a deficient number, since it is larger than the sum of its proper divisors (1).

79638703247 is an equidigital number, since it uses as much as digits as its factorization.

79638703247 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10668672, while the sum is 56.

The spelling of 79638703247 in words is "seventy-nine billion, six hundred thirty-eight million, seven hundred three thousand, two hundred forty-seven".