2144312545 has 16 divisors (see below), whose sum is σ = 2713069440. Its totient is φ = 1622484864.

The previous prime is 2144312503. The next prime is 2144312557. The reversal of 2144312545 is 5452134412.

It is a cyclic number.

It is not a de Polignac number, because 2144312545 - 2²¹ = 2142215393 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40324 + ... + 76906.

It is an arithmetic number, because the mean of its divisors is an integer number (169566840).

Almost surely, 2^2144312545 is an apocalyptic number.

It is an amenable number.

2144312545 is a deficient number, since it is larger than the sum of its proper divisors (568756895).

2144312545 is a wasteful number, since it uses less digits than its factorization.

2144312545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37224.

The product of its digits is 19200, while the sum is 31.

The square root of 2144312545 is about 46306.7224601353. The cubic root of 2144312545 is about 1289.5238001567.

Adding to 2144312545 its reverse (5452134412), we get a palindrome (7596446957).

The spelling of 2144312545 in words is "two billion, one hundred forty-four million, three hundred twelve thousand, five hundred forty-five".