16363221937 has 2 divisors, whose sum is σ = 16363221938. Its totient is φ = 16363221936.

The previous prime is 16363221881. The next prime is 16363221943. The reversal of 16363221937 is 73912236361.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12163663521 + 4199558416 = 110289^2 + 64804^2 .

It is a cyclic number.

It is not a de Polignac number, because 16363221937 - 2²³ = 16354833329 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 16363221893 and 16363221902.

It is not a weakly prime, because it can be changed into another prime (16363221967) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8181610968 + 8181610969.

It is an arithmetic number, because the mean of its divisors is an integer number (8181610969).

Almost surely, 2^16363221937 is an apocalyptic number.

It is an amenable number.

16363221937 is a deficient number, since it is larger than the sum of its proper divisors (1).

16363221937 is an equidigital number, since it uses as much as digits as its factorization.

16363221937 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 244944, while the sum is 43.

The spelling of 16363221937 in words is "sixteen billion, three hundred sixty-three million, two hundred twenty-one thousand, nine hundred thirty-seven".