143566534897 has 2 divisors, whose sum is σ = 143566534898. Its totient is φ = 143566534896.

The previous prime is 143566534871. The next prime is 143566534921. The reversal of 143566534897 is 798435665341.

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., 103977871936 + 39588662961 = 322456^2 + 198969^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-143566534897 is a prime.

It is a super-2 number, since 2×143566534897² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (143566534817) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71783267448 + 71783267449.

It is an arithmetic number, because the mean of its divisors is an integer number (71783267449).

Almost surely, 2^143566534897 is an apocalyptic number.

It is an amenable number.

143566534897 is a deficient number, since it is larger than the sum of its proper divisors (1).

143566534897 is an equidigital number, since it uses as much as digits as its factorization.

143566534897 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 65318400, while the sum is 61.

The spelling of 143566534897 in words is "one hundred forty-three billion, five hundred sixty-six million, five hundred thirty-four thousand, eight hundred ninety-seven".