6497218839231 has 24 divisors (see below), whose sum is σ = 9733836602880. Its totient is φ = 4171198441536.

The previous prime is 6497218839227. The next prime is 6497218839239. The reversal of 6497218839231 is 1329388127946.

6497218839231 is a `hidden beast` number, since 6 + 497 + 2 + 1 + 88 + 39 + 2 + 31 = 666.

It is not a de Polignac number, because 6497218839231 - 2² = 6497218839227 is a prime.

It is a super-2 number, since 2×6497218839231² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6497218839239) 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 23 ways as a sum of consecutive naturals, for example, 32398156 + ... + 32598081.

It is an arithmetic number, because the mean of its divisors is an integer number (405576525120).

Almost surely, 2^{6497218839231} is an apocalyptic number.

6497218839231 is a deficient number, since it is larger than the sum of its proper divisors (3236617763649).

6497218839231 is a wasteful number, since it uses less digits than its factorization.

6497218839231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64996655 (or 64996652 counting only the distinct ones).

The product of its digits is 31352832, while the sum is 63.

The spelling of 6497218839231 in words is "six trillion, four hundred ninety-seven billion, two hundred eighteen million, eight hundred thirty-nine thousand, two hundred thirty-one".