6631441656 has 96 divisors (see below), whose sum is σ = 19302480000. Its totient is φ = 1893011904.

The previous prime is 6631441643. The next prime is 6631441657. The reversal of 6631441656 is 6561441366.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6631441657) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1996365 + ... + 1999683.

It is an arithmetic number, because the mean of its divisors is an integer number (201067500).

Almost surely, 2^6631441656 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 6631441656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9651240000).

6631441656 is an abundant number, since it is smaller than the sum of its proper divisors (12671038344).

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

6631441656 is a wasteful number, since it uses less digits than its factorization.

6631441656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5041 (or 5030 counting only the distinct ones).

The product of its digits is 311040, while the sum is 42.

The square root of 6631441656 is about 81433.6641445048. The cubic root of 6631441656 is about 1878.7514019544.

The spelling of 6631441656 in words is "six billion, six hundred thirty-one million, four hundred forty-one thousand, six hundred fifty-six".