2443145661 has 24 divisors (see below), whose sum is σ = 3887938080. Its totient is φ = 1466028000.

The previous prime is 2443145651. The next prime is 2443145669. The reversal of 2443145661 is 1665413442.

It is not a de Polignac number, because 2443145661 - 2²³ = 2434757053 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2443145669) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 112171 + ... + 132168.

It is an arithmetic number, because the mean of its divisors is an integer number (161997420).

Almost surely, 2^2443145661 is an apocalyptic number.

It is an amenable number.

2443145661 is a deficient number, since it is larger than the sum of its proper divisors (1444792419).

2443145661 is a wasteful number, since it uses less digits than its factorization.

2443145661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 244457 (or 244454 counting only the distinct ones).

The product of its digits is 69120, while the sum is 36.

The square root of 2443145661 is about 49428.1869078768. The cubic root of 2443145661 is about 1346.8413875337.

The spelling of 2443145661 in words is "two billion, four hundred forty-three million, one hundred forty-five thousand, six hundred sixty-one".