6497316185815 has 64 divisors (see below), whose sum is σ = 9797587236864. Its totient is φ = 4026943185408.

The previous prime is 6497316185813. The next prime is 6497316185819. The reversal of 6497316185815 is 5185816137946.

It is not a de Polignac number, because 6497316185815 - 2¹ = 6497316185813 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6497316185813) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 4452877 + ... + 5729113.

It is an arithmetic number, because the mean of its divisors is an integer number (153087300576).

Almost surely, 2^{6497316185815} is an apocalyptic number.

6497316185815 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

6497316185815 is a deficient number, since it is larger than the sum of its proper divisors (3300271051049).

6497316185815 is a wasteful number, since it uses less digits than its factorization.

6497316185815 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1276496.

The product of its digits is 43545600, while the sum is 64.

The spelling of 6497316185815 in words is "six trillion, four hundred ninety-seven billion, three hundred sixteen million, one hundred eighty-five thousand, eight hundred fifteen".