6511317473 has 2 divisors, whose sum is σ = 6511317474. Its totient is φ = 6511317472.

The previous prime is 6511317437. The next prime is 6511317497. The reversal of 6511317473 is 3747131156.

Together with previous prime (6511317437) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6497649664 + 13667809 = 80608^2 + 3697^2 .

It is a cyclic number.

It is not a de Polignac number, because 6511317473 - 2⁸ = 6511317217 is a prime.

It is not a weakly prime, because it can be changed into another prime (6511310473) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3255658736 + 3255658737.

It is an arithmetic number, because the mean of its divisors is an integer number (3255658737).

Almost surely, 2^6511317473 is an apocalyptic number.

It is an amenable number.

6511317473 is a deficient number, since it is larger than the sum of its proper divisors (1).

6511317473 is an equidigital number, since it uses as much as digits as its factorization.

6511317473 is an evil number, because the sum of its binary digits is even.

The product of its digits is 52920, while the sum is 38.

The square root of 6511317473 is about 80692.7349455947. The cubic root of 6511317473 is about 1867.3380938198.

The spelling of 6511317473 in words is "six billion, five hundred eleven million, three hundred seventeen thousand, four hundred seventy-three".