143609665361 has 2 divisors, whose sum is σ = 143609665362. Its totient is φ = 143609665360.

The previous prime is 143609665333. The next prime is 143609665373. The reversal of 143609665361 is 163566906341.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 101486207761 + 42123457600 = 318569^2 + 205240^2 .

It is a cyclic number.

It is not a de Polignac number, because 143609665361 - 2¹⁰ = 143609664337 is a prime.

It is not a weakly prime, because it can be changed into another prime (143609665321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71804832680 + 71804832681.

It is an arithmetic number, because the mean of its divisors is an integer number (71804832681).

Almost surely, 2^143609665361 is an apocalyptic number.

It is an amenable number.

143609665361 is a deficient number, since it is larger than the sum of its proper divisors (1).

143609665361 is an equidigital number, since it uses as much as digits as its factorization.

143609665361 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2099520, while the sum is 50.

The spelling of 143609665361 in words is "one hundred forty-three billion, six hundred nine million, six hundred sixty-five thousand, three hundred sixty-one".