321887480664 has 16 divisors (see below), whose sum is σ = 804718701720. Its totient is φ = 107295826880.

The previous prime is 321887480657. The next prime is 321887480687. The reversal of 321887480664 is 466084788123.

It is a super-2 number, since 2×321887480664² (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, 6705989157 + ... + 6705989204.

Almost surely, 2^321887480664 is an apocalyptic number.

It is an amenable number.

321887480664 is an abundant number, since it is smaller than the sum of its proper divisors (482831221056).

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

321887480664 is a wasteful number, since it uses less digits than its factorization.

321887480664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13411978370 (or 13411978366 counting only the distinct ones).

The product of its (nonzero) digits is 12386304, while the sum is 57.

The spelling of 321887480664 in words is "three hundred twenty-one billion, eight hundred eighty-seven million, four hundred eighty thousand, six hundred sixty-four".