6460777517 has 2 divisors, whose sum is σ = 6460777518. Its totient is φ = 6460777516.

The previous prime is 6460777513. The next prime is 6460777523. The reversal of 6460777517 is 7157770646.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3711977476 + 2748800041 = 60926^2 + 52429^2 .

It is a cyclic number.

It is not a de Polignac number, because 6460777517 - 2² = 6460777513 is a prime.

It is a super-2 number, since 2×6460777517² = 83483292248345370578, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6460777513) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3230388758 + 3230388759.

It is an arithmetic number, because the mean of its divisors is an integer number (3230388759).

Almost surely, 2^6460777517 is an apocalyptic number.

It is an amenable number.

6460777517 is a deficient number, since it is larger than the sum of its proper divisors (1).

6460777517 is an equidigital number, since it uses as much as digits as its factorization.

6460777517 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728720, while the sum is 50.

The square root of 6460777517 is about 80378.9619054638. The cubic root of 6460777517 is about 1862.4941985736.

The spelling of 6460777517 in words is "six billion, four hundred sixty million, seven hundred seventy-seven thousand, five hundred seventeen".