320631564003552 has 72 divisors (see below), whose sum is σ = 916833557301480. Its totient is φ = 106286706282240.

The previous prime is 320631564003521. The next prime is 320631564003559. The reversal of 320631564003552 is 255300465136023.

320631564003552 is a `hidden beast` number, since 3 + 2 + 0 + 6 + 3 + 1 + 56 + 40 + 0 + 3 + 552 = 666.

It is a tau number, because it is divible by the number of its divisors (72).

It is a junction number, because it is equal to n+sod(n) for n = 320631564003498 and 320631564003507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320631564003559) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3075373402 + ... + 3075477657.

It is an arithmetic number, because the mean of its divisors is an integer number (12733799406965).

Almost surely, 2^{320631564003552} is an apocalyptic number.

320631564003552 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

320631564003552 is an abundant number, since it is smaller than the sum of its proper divisors (596201993297928).

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

320631564003552 is a wasteful number, since it uses less digits than its factorization.

320631564003552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6150851256 (or 6150851245 counting only the distinct ones).

The product of its (nonzero) digits is 1944000, while the sum is 45.

The spelling of 320631564003552 in words is "three hundred twenty trillion, six hundred thirty-one billion, five hundred sixty-four million, three thousand, five hundred fifty-two".