6499081960505 has 16 divisors (see below), whose sum is σ = 7806131296704. Its totient is φ = 5194444906560.

The previous prime is 6499081960499. The next prime is 6499081960507. The reversal of 6499081960505 is 5050691809946.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-6499081960505 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6499081960507) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 41883794 + ... + 42038676.

It is an arithmetic number, because the mean of its divisors is an integer number (487883206044).

Almost surely, 2^{6499081960505} is an apocalyptic number.

It is an amenable number.

6499081960505 is a deficient number, since it is larger than the sum of its proper divisors (1307049336199).

6499081960505 is a wasteful number, since it uses less digits than its factorization.

6499081960505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162616.

The product of its (nonzero) digits is 20995200, while the sum is 62.

The spelling of 6499081960505 in words is "six trillion, four hundred ninety-nine billion, eighty-one million, nine hundred sixty thousand, five hundred five".