146221535569 has 2 divisors, whose sum is σ = 146221535570. Its totient is φ = 146221535568.

The previous prime is 146221535563. The next prime is 146221535639. The reversal of 146221535569 is 965535122641.

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., 114470572225 + 31750963344 = 338335^2 + 178188^2 .

It is an emirp because it is prime and its reverse (965535122641) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 146221535569 - 2⁷ = 146221535441 is a prime.

It is a super-2 number, since 2×146221535569² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (146221535563) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 73110767784 + 73110767785.

It is an arithmetic number, because the mean of its divisors is an integer number (73110767785).

Almost surely, 2^146221535569 is an apocalyptic number.

It is an amenable number.

146221535569 is a deficient number, since it is larger than the sum of its proper divisors (1).

146221535569 is an equidigital number, since it uses as much as digits as its factorization.

146221535569 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1944000, while the sum is 49.

The spelling of 146221535569 in words is "one hundred forty-six billion, two hundred twenty-one million, five hundred thirty-five thousand, five hundred sixty-nine".