4644661123 has 4 divisors (see below), whose sum is σ = 4644963648. Its totient is φ = 4644358600.

The previous prime is 4644661061. The next prime is 4644661129. The reversal of 4644661123 is 3211664464.

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-4644661123 is a prime.

It is a super-2 number, since 2×4644661123² = 43145753895015242258, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4644661129) 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, 126928 + ... + 159373.

It is an arithmetic number, because the mean of its divisors is an integer number (1161240912).

Almost surely, 2^4644661123 is an apocalyptic number.

4644661123 is a deficient number, since it is larger than the sum of its proper divisors (302525).

4644661123 is a wasteful number, since it uses less digits than its factorization.

4644661123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 302524.

The product of its digits is 82944, while the sum is 37.

The square root of 4644661123 is about 68151.7506965155. The cubic root of 4644661123 is about 1668.4684972131.

The spelling of 4644661123 in words is "four billion, six hundred forty-four million, six hundred sixty-one thousand, one hundred twenty-three".