320524738768 has 20 divisors (see below), whose sum is σ = 668787195748. Its totient is φ = 147934494720.

The previous prime is 320524738757. The next prime is 320524738777. The reversal of 320524738768 is 867837425023.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 163287111744 + 157237627024 = 404088^2 + 396532^2 .

It is a super-2 number, since 2×320524738768² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 770491953 + ... + 770492368.

Almost surely, 2^320524738768 is an apocalyptic number.

It is an amenable number.

320524738768 is an abundant number, since it is smaller than the sum of its proper divisors (348262456980).

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

320524738768 is a wasteful number, since it uses less digits than its factorization.

320524738768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1540984342 (or 1540984336 counting only the distinct ones).

The product of its (nonzero) digits is 13547520, while the sum is 55.

The spelling of 320524738768 in words is "three hundred twenty billion, five hundred twenty-four million, seven hundred thirty-eight thousand, seven hundred sixty-eight".