321381046845 has 40 divisors (see below), whose sum is σ = 576146688480. Its totient is φ = 171390906720.

The previous prime is 321381046817. The next prime is 321381046849. The reversal of 321381046845 is 548640183123.

321381046845 is a `hidden beast` number, since 3 + 2 + 138 + 10 + 468 + 45 = 666.

It is not a de Polignac number, because 321381046845 - 2⁶ = 321381046781 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 321381046845.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (321381046849) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 9740386 + ... + 9773324.

It is an arithmetic number, because the mean of its divisors is an integer number (14403667212).

Almost surely, 2^321381046845 is an apocalyptic number.

It is an amenable number.

321381046845 is a deficient number, since it is larger than the sum of its proper divisors (254765641635).

321381046845 is a wasteful number, since it uses less digits than its factorization.

321381046845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57047 (or 57038 counting only the distinct ones).

The product of its (nonzero) digits is 552960, while the sum is 45.

The spelling of 321381046845 in words is "three hundred twenty-one billion, three hundred eighty-one million, forty-six thousand, eight hundred forty-five".