6531146752 has 88 divisors (see below), whose sum is σ = 14327051256. Its totient is φ = 2957180928.

The previous prime is 6531146747. The next prime is 6531146761. The reversal of 6531146752 is 2576411356.

It can be written as a sum of positive squares in 4 ways, for example, as 12845056 + 6518301696 = 3584^2 + 80736^2 .

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, 700908 + ... + 710164.

Almost surely, 2^6531146752 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 6531146752, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7163525628).

6531146752 is an abundant number, since it is smaller than the sum of its proper divisors (7795904504).

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

6531146752 is a wasteful number, since it uses less digits than its factorization.

6531146752 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9343 (or 9325 counting only the distinct ones).

The product of its digits is 151200, while the sum is 40.

The square root of 6531146752 is about 80815.5105904801. The cubic root of 6531146752 is about 1869.2317425264.

The spelling of 6531146752 in words is "six billion, five hundred thirty-one million, one hundred forty-six thousand, seven hundred fifty-two".