2144051215309 has 2 divisors, whose sum is σ = 2144051215310. Its totient is φ = 2144051215308.

The previous prime is 2144051215307. The next prime is 2144051215337. The reversal of 2144051215309 is 9035121504412.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1439467249284 + 704583966025 = 1199778^2 + 839395^2 .

It is a cyclic number.

It is not a de Polignac number, because 2144051215309 - 2¹ = 2144051215307 is a prime.

It is a super-2 number, since 2×2144051215309² (a number of 25 digits) contains 22 as substring.

Together with 2144051215307, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2144051215307) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1072025607654 + 1072025607655.

It is an arithmetic number, because the mean of its divisors is an integer number (1072025607655).

Almost surely, 2^{2144051215309} is an apocalyptic number.

It is an amenable number.

2144051215309 is a deficient number, since it is larger than the sum of its proper divisors (1).

2144051215309 is an equidigital number, since it uses as much as digits as its factorization.

2144051215309 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 43200, while the sum is 37.

The spelling of 2144051215309 in words is "two trillion, one hundred forty-four billion, fifty-one million, two hundred fifteen thousand, three hundred nine".