18476474674337 has 2 divisors, whose sum is σ = 18476474674338. Its totient is φ = 18476474674336.

The previous prime is 18476474674321. The next prime is 18476474674391. The reversal of 18476474674337 is 73347647467481.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11110195574416 + 7366279099921 = 3333196^2 + 2714089^2 .

It is an emirp because it is prime and its reverse (73347647467481) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 18476474674337 - 2⁴ = 18476474674321 is a prime.

It is not a weakly prime, because it can be changed into another prime (18476474674397) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9238237337168 + 9238237337169.

It is an arithmetic number, because the mean of its divisors is an integer number (9238237337169).

Almost surely, 2^{18476474674337} is an apocalyptic number.

It is an amenable number.

18476474674337 is a deficient number, since it is larger than the sum of its proper divisors (1).

18476474674337 is an equidigital number, since it uses as much as digits as its factorization.

18476474674337 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1593188352, while the sum is 71.

The spelling of 18476474674337 in words is "eighteen trillion, four hundred seventy-six billion, four hundred seventy-four million, six hundred seventy-four thousand, three hundred thirty-seven".