320420201345 has 8 divisors (see below), whose sum is σ = 385392244776. Its totient is φ = 255744158976.

The previous prime is 320420201333. The next prime is 320420201351. The reversal of 320420201345 is 543102024023.

It can be written as a sum of positive squares in 4 ways, for example, as 65306313601 + 255113887744 = 255551^2 + 505088^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 320420201345 - 2¹⁶ = 320420135809 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 73997882 + ... + 74002211.

It is an arithmetic number, because the mean of its divisors is an integer number (48174030597).

Almost surely, 2^320420201345 is an apocalyptic number.

It is an amenable number.

320420201345 is a deficient number, since it is larger than the sum of its proper divisors (64972043431).

320420201345 is a wasteful number, since it uses less digits than its factorization.

320420201345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148000531.

The product of its (nonzero) digits is 5760, while the sum is 26.

Adding to 320420201345 its reverse (543102024023), we get a palindrome (863522225368).

The spelling of 320420201345 in words is "three hundred twenty billion, four hundred twenty million, two hundred one thousand, three hundred forty-five".