6631142320 has 80 divisors (see below), whose sum is σ = 17399020320. Its totient is φ = 2328166400.

The previous prime is 6631142303. The next prime is 6631142321. The reversal of 6631142320 is 232411366.

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

It is not an unprimeable number, because it can be changed into a prime (6631142321) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 104401 + ... + 155440.

It is an arithmetic number, because the mean of its divisors is an integer number (217487754).

Almost surely, 2^6631142320 is an apocalyptic number.

It is an amenable number.

6631142320 is an abundant number, since it is smaller than the sum of its proper divisors (10767878000).

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

6631142320 is a wasteful number, since it uses less digits than its factorization.

6631142320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 259894 (or 259888 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 28.

The square root of 6631142320 is about 81431.8262106408. The cubic root of 6631142320 is about 1878.7231332701.

Adding to 6631142320 its reverse (232411366), we get a palindrome (6863553686).

The spelling of 6631142320 in words is "six billion, six hundred thirty-one million, one hundred forty-two thousand, three hundred twenty".