6531655000 has 320 divisors, whose sum is σ = 18279898560. Its totient is φ = 2162688000.

The previous prime is 6531654967. The next prime is 6531655033. The reversal of 6531655000 is 5561356.

It is an interprime number because it is at equal distance from previous prime (6531654967) and next prime (6531655033).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 25414872 + ... + 25415128.

It is an arithmetic number, because the mean of its divisors is an integer number (57124683).

Almost surely, 2^6531655000 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 6531655000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9139949280).

6531655000 is an abundant number, since it is smaller than the sum of its proper divisors (11748243560).

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

6531655000 is a wasteful number, since it uses less digits than its factorization.

6531655000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 336 (or 317 counting only the distinct ones).

The product of its (nonzero) digits is 13500, while the sum is 31.

The square root of 6531655000 is about 80818.6550246909. The cubic root of 6531655000 is about 1869.2802285830.

The spelling of 6531655000 in words is "six billion, five hundred thirty-one million, six hundred fifty-five thousand".