144636736417 has 4 divisors (see below), whose sum is σ = 144896407956. Its totient is φ = 144377064880.

The previous prime is 144636736397. The next prime is 144636736451. The reversal of 144636736417 is 714637636441.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 58746125376 + 85890611041 = 242376^2 + 293071^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-144636736417 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (144636736817) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 129834934 + ... + 129836047.

It is an arithmetic number, because the mean of its divisors is an integer number (36224101989).

Almost surely, 2^144636736417 is an apocalyptic number.

It is an amenable number.

144636736417 is a deficient number, since it is larger than the sum of its proper divisors (259671539).

144636736417 is an equidigital number, since it uses as much as digits as its factorization.

144636736417 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 259671538.

The product of its digits is 6096384, while the sum is 52.

The spelling of 144636736417 in words is "one hundred forty-four billion, six hundred thirty-six million, seven hundred thirty-six thousand, four hundred seventeen".