320748522837564 has 48 divisors (see below), whose sum is σ = 749812449931776. Its totient is φ = 106716465273600.

The previous prime is 320748522837529. The next prime is 320748522837641. The reversal of 320748522837564 is 465738225847023.

It is a super-2 number, since 2×320748522837564² (a number of 30 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (66) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 320748522837495 and 320748522837504.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2867959 + ... + 25489649.

It is an arithmetic number, because the mean of its divisors is an integer number (15621092706912).

Almost surely, 2^{320748522837564} is an apocalyptic number.

It is an amenable number.

320748522837564 is an abundant number, since it is smaller than the sum of its proper divisors (429063927094212).

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

320748522837564 is a wasteful number, since it uses less digits than its factorization.

320748522837564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22623906 (or 22623904 counting only the distinct ones).

The product of its (nonzero) digits is 541900800, while the sum is 66.

The spelling of 320748522837564 in words is "three hundred twenty trillion, seven hundred forty-eight billion, five hundred twenty-two million, eight hundred thirty-seven thousand, five hundred sixty-four".