143643221255629 has 2 divisors, whose sum is σ = 143643221255630. Its totient is φ = 143643221255628.

The previous prime is 143643221255581. The next prime is 143643221255641. The reversal of 143643221255629 is 926552122346341.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 93303486753129 + 50339734502500 = 9659373^2 + 7095050^2 .

It is a cyclic number.

It is not a de Polignac number, because 143643221255629 - 2²¹ = 143643219158477 is a prime.

It is a super-3 number, since 3×143643221255629³ (a number of 43 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 143643221255629.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (143643221255929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71821610627814 + 71821610627815.

It is an arithmetic number, because the mean of its divisors is an integer number (71821610627815).

Almost surely, 2^{143643221255629} is an apocalyptic number.

It is an amenable number.

143643221255629 is a deficient number, since it is larger than the sum of its proper divisors (1).

143643221255629 is an equidigital number, since it uses as much as digits as its factorization.

143643221255629 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18662400, while the sum is 55.

The spelling of 143643221255629 in words is "one hundred forty-three trillion, six hundred forty-three billion, two hundred twenty-one million, two hundred fifty-five thousand, six hundred twenty-nine".