320237945064 has 64 divisors (see below), whose sum is σ = 890074440000. Its totient is φ = 106683030720.

The previous prime is 320237945063. The next prime is 320237945081. The reversal of 320237945064 is 460549732023.

320237945064 is a `hidden beast` number, since 3 + 20 + 2 + 37 + 94 + 506 + 4 = 666.

It is not an unprimeable number, because it can be changed into a prime (320237945063) 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, 69327 + ... + 803294.

It is an arithmetic number, because the mean of its divisors is an integer number (13907413125).

Almost surely, 2^320237945064 is an apocalyptic number.

It is an amenable number.

320237945064 is an abundant number, since it is smaller than the sum of its proper divisors (569836494936).

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

320237945064 is a wasteful number, since it uses less digits than its factorization.

320237945064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 874335 (or 874325 counting only the distinct ones).

The product of its (nonzero) digits is 1088640, while the sum is 45.

The spelling of 320237945064 in words is "three hundred twenty billion, two hundred thirty-seven million, nine hundred forty-five thousand, sixty-four".