4817644821 has 24 divisors (see below), whose sum is σ = 7609623840. Its totient is φ = 2912791200.

The previous prime is 4817644817. The next prime is 4817644831. The reversal of 4817644821 is 1284467184.

It is not a de Polignac number, because 4817644821 - 2² = 4817644817 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4817644831) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 16590 + ... + 99551.

It is an arithmetic number, because the mean of its divisors is an integer number (317067660).

Almost surely, 2^4817644821 is an apocalyptic number.

It is an amenable number.

4817644821 is a deficient number, since it is larger than the sum of its proper divisors (2791979019).

4817644821 is a wasteful number, since it uses less digits than its factorization.

4817644821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116577 (or 116574 counting only the distinct ones).

The product of its digits is 344064, while the sum is 45.

The square root of 4817644821 is about 69409.2560181998. The cubic root of 4817644821 is about 1688.9297778056.

The spelling of 4817644821 in words is "four billion, eight hundred seventeen million, six hundred forty-four thousand, eight hundred twenty-one".