320214772845 has 96 divisors (see below), whose sum is σ = 614691417600. Its totient is φ = 152907955200.

The previous prime is 320214772799. The next prime is 320214772847. The reversal of 320214772845 is 548277412023.

320214772845 is a `hidden beast` number, since 320 + 2 + 1 + 47 + 7 + 284 + 5 = 666.

It is not a de Polignac number, because 320214772845 - 2⁸ = 320214772589 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 320214772845.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320214772847) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 15983935 + ... + 16003955.

It is an arithmetic number, because the mean of its divisors is an integer number (6403035600).

Almost surely, 2^320214772845 is an apocalyptic number.

It is an amenable number.

320214772845 is a deficient number, since it is larger than the sum of its proper divisors (294476644755).

320214772845 is a wasteful number, since it uses less digits than its factorization.

320214772845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20531 (or 20528 counting only the distinct ones).

The product of its (nonzero) digits is 752640, while the sum is 45.

The spelling of 320214772845 in words is "three hundred twenty billion, two hundred fourteen million, seven hundred seventy-two thousand, eight hundred forty-five".