79460137967689 has 2 divisors, whose sum is σ = 79460137967690. Its totient is φ = 79460137967688.

The previous prime is 79460137967681. The next prime is 79460137967701. The reversal of 79460137967689 is 98676973106497.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 71412505150464 + 8047632817225 = 8450592^2 + 2836835^2 .

It is a cyclic number.

It is not a de Polignac number, because 79460137967689 - 2³ = 79460137967681 is a prime.

It is not a weakly prime, because it can be changed into another prime (79460137967681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39730068983844 + 39730068983845.

It is an arithmetic number, because the mean of its divisors is an integer number (39730068983845).

Almost surely, 2^{79460137967689} is an apocalyptic number.

It is an amenable number.

79460137967689 is a deficient number, since it is larger than the sum of its proper divisors (1).

79460137967689 is an equidigital number, since it uses as much as digits as its factorization.

79460137967689 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5184974592, while the sum is 82.

The spelling of 79460137967689 in words is "seventy-nine trillion, four hundred sixty billion, one hundred thirty-seven million, nine hundred sixty-seven thousand, six hundred eighty-nine".