6459961279 has 2 divisors, whose sum is σ = 6459961280. Its totient is φ = 6459961278.

The previous prime is 6459961273. The next prime is 6459961289. The reversal of 6459961279 is 9721699546.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6459961279 - 2⁵ = 6459961247 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6459961273) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3229980639 + 3229980640.

It is an arithmetic number, because the mean of its divisors is an integer number (3229980640).

Almost surely, 2^6459961279 is an apocalyptic number.

6459961279 is a deficient number, since it is larger than the sum of its proper divisors (1).

6459961279 is an equidigital number, since it uses as much as digits as its factorization.

6459961279 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7348320, while the sum is 58.

The square root of 6459961279 is about 80373.8843095193. The cubic root of 6459961279 is about 1862.4157610294.

The spelling of 6459961279 in words is "six billion, four hundred fifty-nine million, nine hundred sixty-one thousand, two hundred seventy-nine".