6531776120 has 64 divisors (see below), whose sum is σ = 15026964480. Its totient is φ = 2554093696.

The previous prime is 6531776113. The next prime is 6531776149. The reversal of 6531776120 is 216771356.

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, 2230097 + ... + 2233023.

It is an arithmetic number, because the mean of its divisors is an integer number (234796320).

Almost surely, 2^6531776120 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6531776120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7513482240).

6531776120 is an abundant number, since it is smaller than the sum of its proper divisors (8495188360).

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

6531776120 is a wasteful number, since it uses less digits than its factorization.

6531776120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4172 (or 4168 counting only the distinct ones).

The product of its (nonzero) digits is 52920, while the sum is 38.

The square root of 6531776120 is about 80819.4043531626. The cubic root of 6531776120 is about 1869.2917828685.

The spelling of 6531776120 in words is "six billion, five hundred thirty-one million, seven hundred seventy-six thousand, one hundred twenty".