6500012491 has 8 divisors (see below), whose sum is σ = 7530347744. Its totient is φ = 5495117760.

The previous prime is 6500012471. The next prime is 6500012503. The reversal of 6500012491 is 1942100056.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 6500012491 - 2⁹ = 6500011979 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6500012471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6359580 + ... + 6360601.

It is an arithmetic number, because the mean of its divisors is an integer number (941293468).

Almost surely, 2^6500012491 is an apocalyptic number.

6500012491 is a deficient number, since it is larger than the sum of its proper divisors (1030335253).

6500012491 is a wasteful number, since it uses less digits than its factorization.

6500012491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12720261.

The product of its (nonzero) digits is 2160, while the sum is 28.

The square root of 6500012491 is about 80622.6549488418. The cubic root of 6500012491 is about 1866.2567738642.

The spelling of 6500012491 in words is "six billion, five hundred million, twelve thousand, four hundred ninety-one".