16621186027 has 2 divisors, whose sum is σ = 16621186028. Its totient is φ = 16621186026.

The previous prime is 16621185989. The next prime is 16621186033. The reversal of 16621186027 is 72068112661.

It is a strong prime.

It is an emirp because it is prime and its reverse (72068112661) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16621186027 is a prime.

It is not a weakly prime, because it can be changed into another prime (16621186037) 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, 8310593013 + 8310593014.

It is an arithmetic number, because the mean of its divisors is an integer number (8310593014).

Almost surely, 2^16621186027 is an apocalyptic number.

16621186027 is a deficient number, since it is larger than the sum of its proper divisors (1).

16621186027 is an equidigital number, since it uses as much as digits as its factorization.

16621186027 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48384, while the sum is 40.

Adding to 16621186027 its reverse (72068112661), we get a palindrome (88689298688).

The spelling of 16621186027 in words is "sixteen billion, six hundred twenty-one million, one hundred eighty-six thousand, twenty-seven".