143649831209849 has 2 divisors, whose sum is σ = 143649831209850. Its totient is φ = 143649831209848.

The previous prime is 143649831209837. The next prime is 143649831209851. The reversal of 143649831209849 is 948902138946341.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 132233325525625 + 11416505684224 = 11499275^2 + 3378832^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-143649831209849 is a prime.

Together with 143649831209851, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (143649831203849) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71824915604924 + 71824915604925.

It is an arithmetic number, because the mean of its divisors is an integer number (71824915604925).

Almost surely, 2^{143649831209849} is an apocalyptic number.

It is an amenable number.

143649831209849 is a deficient number, since it is larger than the sum of its proper divisors (1).

143649831209849 is an equidigital number, since it uses as much as digits as its factorization.

143649831209849 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 322486272, while the sum is 71.

The spelling of 143649831209849 in words is "one hundred forty-three trillion, six hundred forty-nine billion, eight hundred thirty-one million, two hundred nine thousand, eight hundred forty-nine".