6497520168 has 32 divisors (see below), whose sum is σ = 16411268160. Its totient is φ = 2143511040.

The previous prime is 6497520163. The next prime is 6497520187. The reversal of 6497520168 is 8610257946.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (6497520163) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1393188 + ... + 1397843.

It is an arithmetic number, because the mean of its divisors is an integer number (512852130).

Almost surely, 2^6497520168 is an apocalyptic number.

It is an amenable number.

6497520168 is an abundant number, since it is smaller than the sum of its proper divisors (9913747992).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6497520168 is a wasteful number, since it uses less digits than its factorization.

6497520168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2791137 (or 2791133 counting only the distinct ones).

The product of its (nonzero) digits is 725760, while the sum is 48.

The square root of 6497520168 is about 80607.1967506624. The cubic root of 6497520168 is about 1866.0182148714.

The spelling of 6497520168 in words is "six billion, four hundred ninety-seven million, five hundred twenty thousand, one hundred sixty-eight".