2660443423 has 4 divisors (see below), whose sum is σ = 2902301928. Its totient is φ = 2418584920.

The previous prime is 2660443397. The next prime is 2660443469. The reversal of 2660443423 is 3243440662.

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

It is a cyclic number.

It is not a de Polignac number, because 2660443423 - 2⁵ = 2660443391 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 (2660440423) 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, 120929236 + ... + 120929257.

It is an arithmetic number, because the mean of its divisors is an integer number (725575482).

Almost surely, 2^2660443423 is an apocalyptic number.

2660443423 is a deficient number, since it is larger than the sum of its proper divisors (241858505).

2660443423 is a wasteful number, since it uses less digits than its factorization.

2660443423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 241858504.

The product of its (nonzero) digits is 82944, while the sum is 34.

The square root of 2660443423 is about 51579.4864553729. The cubic root of 2660443423 is about 1385.6429694148.

The spelling of 2660443423 in words is "two billion, six hundred sixty million, four hundred forty-three thousand, four hundred twenty-three".