2663612443 has 4 divisors (see below), whose sum is σ = 2665972840. Its totient is φ = 2661252048.

The previous prime is 2663612431. The next prime is 2663612447. The reversal of 2663612443 is 3442163662.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2663612443 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2663612447) 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, 1178505 + ... + 1180762.

It is an arithmetic number, because the mean of its divisors is an integer number (666493210).

Almost surely, 2^2663612443 is an apocalyptic number.

2663612443 is a deficient number, since it is larger than the sum of its proper divisors (2360397).

2663612443 is a wasteful number, since it uses less digits than its factorization.

2663612443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2360396.

The product of its digits is 124416, while the sum is 37.

The square root of 2663612443 is about 51610.1970835222. The cubic root of 2663612443 is about 1386.1929263482.

The spelling of 2663612443 in words is "two billion, six hundred sixty-three million, six hundred twelve thousand, four hundred forty-three".