6499081960513 has 4 divisors (see below), whose sum is σ = 6499087319088. Its totient is φ = 6499076601940.

The previous prime is 6499081960507. The next prime is 6499081960517. The reversal of 6499081960513 is 3150691809946.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 6499081960513 - 2³³ = 6490492025921 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6499081960517) 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 3 ways as a sum of consecutive naturals, for example, 103170 + ... + 3606772.

It is an arithmetic number, because the mean of its divisors is an integer number (1624771829772).

Almost surely, 2^{6499081960513} is an apocalyptic number.

It is an amenable number.

6499081960513 is a deficient number, since it is larger than the sum of its proper divisors (5358575).

6499081960513 is a wasteful number, since it uses less digits than its factorization.

6499081960513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5358574.

The product of its (nonzero) digits is 12597120, while the sum is 61.

The spelling of 6499081960513 in words is "six trillion, four hundred ninety-nine billion, eighty-one million, nine hundred sixty thousand, five hundred thirteen".