6501881056 has 48 divisors (see below), whose sum is σ = 13974484608. Its totient is φ = 2953238400.

The previous prime is 6501881041. The next prime is 6501881093.

6501881056 is nontrivially palindromic in base 10.

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, 537151 + ... + 549121.

It is an arithmetic number, because the mean of its divisors is an integer number (291135096).

Almost surely, 2^6501881056 is an apocalyptic number.

It is an amenable number.

6501881056 is an abundant number, since it is smaller than the sum of its proper divisors (7472603552).

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

6501881056 is a wasteful number, since it uses less digits than its factorization.

6501881056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13535 (or 13527 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 40.

The square root of 6501881056 is about 80634.2424531911. The cubic root of 6501881056 is about 1866.4355882890.

The spelling of 6501881056 in words is "six billion, five hundred one million, eight hundred eighty-one thousand, fifty-six".