320891794745 has 16 divisors (see below), whose sum is σ = 392395700160. Its totient is φ = 251831221824.

The previous prime is 320891794721. The next prime is 320891794799. The reversal of 320891794745 is 547497198023.

It is a cyclic number.

It is not a de Polignac number, because 320891794745 - 2¹⁰ = 320891793721 is a prime.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 1707122 + ... + 1885748.

It is an arithmetic number, because the mean of its divisors is an integer number (24524731260).

Almost surely, 2^320891794745 is an apocalyptic number.

It is an amenable number.

320891794745 is a deficient number, since it is larger than the sum of its proper divisors (71503905415).

320891794745 is a wasteful number, since it uses less digits than its factorization.

320891794745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 185464.

The product of its (nonzero) digits is 15240960, while the sum is 59.

The spelling of 320891794745 in words is "three hundred twenty billion, eight hundred ninety-one million, seven hundred ninety-four thousand, seven hundred forty-five".