143674320649 has 2 divisors, whose sum is σ = 143674320650. Its totient is φ = 143674320648.

The previous prime is 143674320641. The next prime is 143674320737. The reversal of 143674320649 is 946023476341.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 143580366400 + 93954249 = 378920^2 + 9693^2 .

It is an emirp because it is prime and its reverse (946023476341) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 143674320649 - 2³ = 143674320641 is a prime.

It is not a weakly prime, because it can be changed into another prime (143674320641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71837160324 + 71837160325.

It is an arithmetic number, because the mean of its divisors is an integer number (71837160325).

Almost surely, 2^143674320649 is an apocalyptic number.

It is an amenable number.

143674320649 is a deficient number, since it is larger than the sum of its proper divisors (1).

143674320649 is an equidigital number, since it uses as much as digits as its factorization.

143674320649 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2612736, while the sum is 49.

The spelling of 143674320649 in words is "one hundred forty-three billion, six hundred seventy-four million, three hundred twenty thousand, six hundred forty-nine".