322735320073 has 4 divisors (see below), whose sum is σ = 322736665860. Its totient is φ = 322733974288.

The previous prime is 322735320059. The next prime is 322735320079. The reversal of 322735320073 is 370023537223.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 370023537223 = 484151 ⋅764273.

It can be written as a sum of positive squares in 2 ways, for example, as 117678499849 + 205056820224 = 343043^2 + 452832^2 .

It is a cyclic number.

It is not a de Polignac number, because 322735320073 - 2⁹ = 322735319561 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (322735320079) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 204490 + ... + 829027.

It is an arithmetic number, because the mean of its divisors is an integer number (80684166465).

Almost surely, 2^322735320073 is an apocalyptic number.

It is an amenable number.

322735320073 is a deficient number, since it is larger than the sum of its proper divisors (1345787).

322735320073 is a wasteful number, since it uses less digits than its factorization.

322735320073 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1345786.

The product of its (nonzero) digits is 158760, while the sum is 37.

Adding to 322735320073 its reverse (370023537223), we get a palindrome (692758857296).

It can be divided in two parts, 3227353 and 20073, that added together give a triangular number (3247426 = T₂₅₄₈).

The spelling of 322735320073 in words is "three hundred twenty-two billion, seven hundred thirty-five million, three hundred twenty thousand, seventy-three".