6531628880 has 80 divisors (see below), whose sum is σ = 17368412160. Its totient is φ = 2237746176.

The previous prime is 6531628867. The next prime is 6531628897. The reversal of 6531628880 is 888261356.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 924401 + ... + 931439.

It is an arithmetic number, because the mean of its divisors is an integer number (217105152).

Almost surely, 2^6531628880 is an apocalyptic number.

It is an amenable number.

6531628880 is an abundant number, since it is smaller than the sum of its proper divisors (10836783280).

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

6531628880 is a wasteful number, since it uses less digits than its factorization.

6531628880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8716 (or 8710 counting only the distinct ones).

The product of its (nonzero) digits is 552960, while the sum is 47.

The square root of 6531628880 is about 80818.4934281752. The cubic root of 6531628880 is about 1869.2777368375.

The spelling of 6531628880 in words is "six billion, five hundred thirty-one million, six hundred twenty-eight thousand, eight hundred eighty".