320447414081 has 4 divisors (see below), whose sum is σ = 320549568132. Its totient is φ = 320345260032.

The previous prime is 320447414071. The next prime is 320447414083. The reversal of 320447414081 is 180414744023.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 180414744023 = 79 ⋅2283730937.

It can be written as a sum of positive squares in 2 ways, for example, as 317261827600 + 3185586481 = 563260^2 + 56441^2 .

It is a cyclic number.

It is not a de Polignac number, because 320447414081 - 2⁶ = 320447414017 is a prime.

It is a super-2 number, since 2×320447414081² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (320447414083) 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, 51072320 + ... + 51078593.

It is an arithmetic number, because the mean of its divisors is an integer number (80137392033).

Almost surely, 2^320447414081 is an apocalyptic number.

It is an amenable number.

320447414081 is a deficient number, since it is larger than the sum of its proper divisors (102154051).

320447414081 is a wasteful number, since it uses less digits than its factorization.

320447414081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102154050.

The product of its (nonzero) digits is 86016, while the sum is 38.

The spelling of 320447414081 in words is "three hundred twenty billion, four hundred forty-seven million, four hundred fourteen thousand, eighty-one".