16485785227 has 2 divisors, whose sum is σ = 16485785228. Its totient is φ = 16485785226.

The previous prime is 16485785171. The next prime is 16485785269. The reversal of 16485785227 is 72258758461.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16485785227 is a prime.

It is a super-2 number, since 2×16485785227² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (16485785287) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8242892613 + 8242892614.

It is an arithmetic number, because the mean of its divisors is an integer number (8242892614).

Almost surely, 2^16485785227 is an apocalyptic number.

16485785227 is a deficient number, since it is larger than the sum of its proper divisors (1).

16485785227 is an equidigital number, since it uses as much as digits as its factorization.

16485785227 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7526400, while the sum is 55.

It can be divided in two parts, 1648 and 5785227, that added together give a palindrome (5786875).

The spelling of 16485785227 in words is "sixteen billion, four hundred eighty-five million, seven hundred eighty-five thousand, two hundred twenty-seven".