143923966243 has 2 divisors, whose sum is σ = 143923966244. Its totient is φ = 143923966242.

The previous prime is 143923966231. The next prime is 143923966289. The reversal of 143923966243 is 342669329341.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-143923966243 is a prime.

It is not a weakly prime, because it can be changed into another prime (143923976243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71961983121 + 71961983122.

It is an arithmetic number, because the mean of its divisors is an integer number (71961983122).

Almost surely, 2^143923966243 is an apocalyptic number.

143923966243 is a deficient number, since it is larger than the sum of its proper divisors (1).

143923966243 is an equidigital number, since it uses as much as digits as its factorization.

143923966243 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5038848, while the sum is 52.

The spelling of 143923966243 in words is "one hundred forty-three billion, nine hundred twenty-three million, nine hundred sixty-six thousand, two hundred forty-three".