144646340893 has 2 divisors, whose sum is σ = 144646340894. Its totient is φ = 144646340892.

The previous prime is 144646340863. The next prime is 144646340929. The reversal of 144646340893 is 398043646441.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 120677727769 + 23968613124 = 347387^2 + 154818^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-144646340893 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 144646340893.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (144646340863) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72323170446 + 72323170447.

It is an arithmetic number, because the mean of its divisors is an integer number (72323170447).

Almost surely, 2^144646340893 is an apocalyptic number.

It is an amenable number.

144646340893 is a deficient number, since it is larger than the sum of its proper divisors (1).

144646340893 is an equidigital number, since it uses as much as digits as its factorization.

144646340893 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5971968, while the sum is 52.

The spelling of 144646340893 in words is "one hundred forty-four billion, six hundred forty-six million, three hundred forty thousand, eight hundred ninety-three".