16373638481 has 2 divisors, whose sum is σ = 16373638482. Its totient is φ = 16373638480.

The previous prime is 16373638469. The next prime is 16373638507. The reversal of 16373638481 is 18483637361.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8814205456 + 7559433025 = 93884^2 + 86945^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16373638481 is a prime.

It is a super-2 number, since 2×16373638481² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (16373634481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8186819240 + 8186819241.

It is an arithmetic number, because the mean of its divisors is an integer number (8186819241).

Almost surely, 2^16373638481 is an apocalyptic number.

It is an amenable number.

16373638481 is a deficient number, since it is larger than the sum of its proper divisors (1).

16373638481 is an equidigital number, since it uses as much as digits as its factorization.

16373638481 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1741824, while the sum is 50.

The spelling of 16373638481 in words is "sixteen billion, three hundred seventy-three million, six hundred thirty-eight thousand, four hundred eighty-one".