6516497377504 has 24 divisors (see below), whose sum is σ = 12991751105760. Its totient is φ = 3217005033216.

The previous prime is 6516497377501. The next prime is 6516497377517. The reversal of 6516497377504 is 4057737946156.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6516497377501) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1288861669 + ... + 1288866724.

It is an arithmetic number, because the mean of its divisors is an integer number (541322962740).

Almost surely, 2^{6516497377504} is an apocalyptic number.

It is an amenable number.

6516497377504 is a deficient number, since it is larger than the sum of its proper divisors (6475253728256).

6516497377504 is a wasteful number, since it uses less digits than its factorization.

6516497377504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2577728482 (or 2577728474 counting only the distinct ones).

The product of its (nonzero) digits is 133358400, while the sum is 64.

The spelling of 6516497377504 in words is "six trillion, five hundred sixteen billion, four hundred ninety-seven million, three hundred seventy-seven thousand, five hundred four".