6481757756 has 24 divisors (see below), whose sum is σ = 12031948656. Its totient is φ = 3044744960.

The previous prime is 6481757743. The next prime is 6481757767. The reversal of 6481757756 is 6577571846.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47690 + ... + 123441.

It is an arithmetic number, because the mean of its divisors is an integer number (501331194).

Almost surely, 2^6481757756 is an apocalyptic number.

It is an amenable number.

6481757756 is a deficient number, since it is larger than the sum of its proper divisors (5550190900).

6481757756 is a wasteful number, since it uses less digits than its factorization.

6481757756 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 171709 (or 171707 counting only the distinct ones).

The product of its digits is 9878400, while the sum is 56.

The square root of 6481757756 is about 80509.3643994287. The cubic root of 6481757756 is about 1864.5080610663.

The spelling of 6481757756 in words is "six billion, four hundred eighty-one million, seven hundred fifty-seven thousand, seven hundred fifty-six".