6631220352 has 64 divisors (see below), whose sum is σ = 17626016160. Its totient is φ = 2208921600.

The previous prime is 6631220341. The next prime is 6631220357. The reversal of 6631220352 is 2530221366.

It is a tau number, because it is divible by the number of its divisors (64).

It is not an unprimeable number, because it can be changed into a prime (6631220357) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 668227 + ... + 678077.

Almost surely, 2^6631220352 is an apocalyptic number.

It is an amenable number.

6631220352 is an abundant number, since it is smaller than the sum of its proper divisors (10994795808).

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

6631220352 is a wasteful number, since it uses less digits than its factorization.

6631220352 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11621 (or 11609 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 30.

The square root of 6631220352 is about 81432.3053339398. The cubic root of 6631220352 is about 1878.7305025358.

The spelling of 6631220352 in words is "six billion, six hundred thirty-one million, two hundred twenty thousand, three hundred fifty-two".