320166734401 has 4 divisors (see below), whose sum is σ = 320169628804. Its totient is φ = 320163840000.

The previous prime is 320166734399. The next prime is 320166734417. The reversal of 320166734401 is 104437661023.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 104437661023 = 24697 ⋅4228759.

It can be written as a sum of positive squares in 2 ways, for example, as 41119728400 + 279047006001 = 202780^2 + 528249^2 .

It is a cyclic number.

It is not a de Polignac number, because 320166734401 - 2¹ = 320166734399 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (320866734401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1274400 + ... + 1504801.

It is an arithmetic number, because the mean of its divisors is an integer number (80042407201).

Almost surely, 2^320166734401 is an apocalyptic number.

It is an amenable number.

320166734401 is a deficient number, since it is larger than the sum of its proper divisors (2894403).

320166734401 is a wasteful number, since it uses less digits than its factorization.

320166734401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2894402.

The product of its (nonzero) digits is 72576, while the sum is 37.

The spelling of 320166734401 in words is "three hundred twenty billion, one hundred sixty-six million, seven hundred thirty-four thousand, four hundred one".