338228664481 has 4 divisors (see below), whose sum is σ = 358124468292. Its totient is φ = 318332860672.

The previous prime is 338228664469. The next prime is 338228664491. The reversal of 338228664481 is 184466822833.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 184466822833 = 356821 ⋅516973.

It can be written as a sum of positive squares in 2 ways, for example, as 112778430625 + 225450233856 = 335825^2 + 474816^2 .

It is a cyclic number.

It is not a de Polignac number, because 338228664481 - 2¹¹ = 338228662433 is a prime.

It is a super-2 number, since 2×338228664481² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (338228664401) 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, 9947901880 + ... + 9947901913.

It is an arithmetic number, because the mean of its divisors is an integer number (89531117073).

Almost surely, 2^338228664481 is an apocalyptic number.

It is an amenable number.

338228664481 is a deficient number, since it is larger than the sum of its proper divisors (19895803811).

338228664481 is a wasteful number, since it uses less digits than its factorization.

338228664481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19895803810.

The product of its digits is 10616832, while the sum is 55.

The spelling of 338228664481 in words is "three hundred thirty-eight billion, two hundred twenty-eight million, six hundred sixty-four thousand, four hundred eighty-one".