6495782140 has 24 divisors (see below), whose sum is σ = 13673716560. Its totient is φ = 2592108288.

The previous prime is 6495782089. The next prime is 6495782201. The reversal of 6495782140 is 412875946.

It is a super-2 number, since 2×6495782140² = 84390371220685959200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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, 379197 + ... + 395956.

It is an arithmetic number, because the mean of its divisors is an integer number (569738190).

Almost surely, 2^6495782140 is an apocalyptic number.

It is an amenable number.

6495782140 is an abundant number, since it is smaller than the sum of its proper divisors (7177934420).

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

6495782140 is a wasteful number, since it uses less digits than its factorization.

6495782140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 775581 (or 775579 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 46.

The square root of 6495782140 is about 80596.4151808255. The cubic root of 6495782140 is about 1865.8518190240.

The spelling of 6495782140 in words is "six billion, four hundred ninety-five million, seven hundred eighty-two thousand, one hundred forty".