321465550406 has 64 divisors (see below), whose sum is σ = 652778251776. Its totient is φ = 115611899040.

The previous prime is 321465550381. The next prime is 321465550411. The reversal of 321465550406 is 604055564123.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 421280 + ... + 905763.

It is an arithmetic number, because the mean of its divisors is an integer number (10199660184).

Almost surely, 2^321465550406 is an apocalyptic number.

321465550406 is an abundant number, since it is smaller than the sum of its proper divisors (331312701370).

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

321465550406 is a wasteful number, since it uses less digits than its factorization.

321465550406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1327098 (or 1327076 counting only the distinct ones).

The product of its (nonzero) digits is 432000, while the sum is 41.

The spelling of 321465550406 in words is "three hundred twenty-one billion, four hundred sixty-five million, five hundred fifty thousand, four hundred six".