143565227397 has 12 divisors (see below), whose sum is σ = 212976644140. Its totient is φ = 93123390528.

The previous prime is 143565227387. The next prime is 143565227411. The reversal of 143565227397 is 793722565341.

143565227397 is a `hidden beast` number, since 1 + 4 + 3 + 565 + 2 + 2 + 73 + 9 + 7 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 107829483876 + 35735743521 = 328374^2 + 189039^2 .

It is a de Polignac number, because none of the positive numbers 2^k-143565227397 is a prime.

It is a super-2 number, since 2×143565227397² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (143565227317) 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 in 11 ways as a sum of consecutive naturals, for example, 215563072 + ... + 215563737.

Almost surely, 2^143565227397 is an apocalyptic number.

It is an amenable number.

143565227397 is a deficient number, since it is larger than the sum of its proper divisors (69411416743).

143565227397 is a wasteful number, since it uses less digits than its factorization.

143565227397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 431126852 (or 431126849 counting only the distinct ones).

The product of its digits is 9525600, while the sum is 54.

The spelling of 143565227397 in words is "one hundred forty-three billion, five hundred sixty-five million, two hundred twenty-seven thousand, three hundred ninety-seven".