2143440311245 has 8 divisors (see below), whose sum is σ = 2575355640984. Its totient is φ = 1712600737344.

The previous prime is 2143440311209. The next prime is 2143440311273. The reversal of 2143440311245 is 5421130443412.

It can be written as a sum of positive squares in 4 ways, for example, as 7127749476 + 2136312561769 = 84426^2 + 1461613^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2143440311245 - 2¹⁵ = 2143440278477 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2143440311245.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 268934574 + ... + 268942543.

It is an arithmetic number, because the mean of its divisors is an integer number (321919455123).

Almost surely, 2^{2143440311245} is an apocalyptic number.

It is an amenable number.

2143440311245 is a deficient number, since it is larger than the sum of its proper divisors (431915329739).

2143440311245 is an equidigital number, since it uses as much as digits as its factorization.

2143440311245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 537877919.

The product of its (nonzero) digits is 46080, while the sum is 34.

Adding to 2143440311245 its reverse (5421130443412), we get a palindrome (7564570754657).

The spelling of 2143440311245 in words is "two trillion, one hundred forty-three billion, four hundred forty million, three hundred eleven thousand, two hundred forty-five".