16222774177 has 2 divisors, whose sum is σ = 16222774178. Its totient is φ = 16222774176.

The previous prime is 16222774157. The next prime is 16222774231. The reversal of 16222774177 is 77147722261.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15576038416 + 646735761 = 124804^2 + 25431^2 .

It is a cyclic number.

It is not a de Polignac number, because 16222774177 - 2⁷ = 16222774049 is a prime.

It is not a weakly prime, because it can be changed into another prime (16222774147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8111387088 + 8111387089.

It is an arithmetic number, because the mean of its divisors is an integer number (8111387089).

Almost surely, 2^16222774177 is an apocalyptic number.

It is an amenable number.

16222774177 is a deficient number, since it is larger than the sum of its proper divisors (1).

16222774177 is an equidigital number, since it uses as much as digits as its factorization.

16222774177 is an evil number, because the sum of its binary digits is even.

The product of its digits is 460992, while the sum is 46.

The spelling of 16222774177 in words is "sixteen billion, two hundred twenty-two million, seven hundred seventy-four thousand, one hundred seventy-seven".