321745732264 has 64 divisors (see below), whose sum is σ = 676171540800. Its totient is φ = 142286899200.

The previous prime is 321745732249. The next prime is 321745732277. The reversal of 321745732264 is 462237547123.

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, 184194 + ... + 823054.

It is an arithmetic number, because the mean of its divisors is an integer number (10565180325).

Almost surely, 2^321745732264 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 321745732264, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (338085770400).

321745732264 is an abundant number, since it is smaller than the sum of its proper divisors (354425808536).

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

321745732264 is a wasteful number, since it uses less digits than its factorization.

321745732264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 639034 (or 639030 counting only the distinct ones).

The product of its digits is 1693440, while the sum is 46.

The spelling of 321745732264 in words is "three hundred twenty-one billion, seven hundred forty-five million, seven hundred thirty-two thousand, two hundred sixty-four".