143642246369 has 2 divisors, whose sum is σ = 143642246370. Its totient is φ = 143642246368.

The previous prime is 143642246291. The next prime is 143642246387. The reversal of 143642246369 is 963642246341.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 97969000000 + 45673246369 = 313000^2 + 213713^2 .

It is a cyclic number.

It is not a de Polignac number, because 143642246369 - 2¹² = 143642242273 is a prime.

It is a super-2 number, since 2×143642246369² (a number of 23 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (143642240369) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71821123184 + 71821123185.

It is an arithmetic number, because the mean of its divisors is an integer number (71821123185).

Almost surely, 2^143642246369 is an apocalyptic number.

It is an amenable number.

143642246369 is a deficient number, since it is larger than the sum of its proper divisors (1).

143642246369 is an equidigital number, since it uses as much as digits as its factorization.

143642246369 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4478976, while the sum is 50.

The spelling of 143642246369 in words is "one hundred forty-three billion, six hundred forty-two million, two hundred forty-six thousand, three hundred sixty-nine".