2144253434989 has 4 divisors (see below), whose sum is σ = 2144257808220. Its totient is φ = 2144249061760.

The previous prime is 2144253434977. The next prime is 2144253435007. The reversal of 2144253434989 is 9894343524412.

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 1815284655625 + 328968779364 = 1347325^2 + 573558^2 .

It is a cyclic number.

It is not a de Polignac number, because 2144253434989 - 2⁵ = 2144253434957 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2144253434959) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1342534 + ... + 2467975.

It is an arithmetic number, because the mean of its divisors is an integer number (536064452055).

Almost surely, 2^{2144253434989} is an apocalyptic number.

It is an amenable number.

2144253434989 is a deficient number, since it is larger than the sum of its proper divisors (4373231).

2144253434989 is an equidigital number, since it uses as much as digits as its factorization.

2144253434989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4373230.

The product of its digits is 29859840, while the sum is 58.

The spelling of 2144253434989 in words is "two trillion, one hundred forty-four billion, two hundred fifty-three million, four hundred thirty-four thousand, nine hundred eighty-nine".