4421720650 has 48 divisors (see below), whose sum is σ = 8537667840. Its totient is φ = 1701964800.

The previous prime is 4421720593. The next prime is 4421720671. The reversal of 4421720650 is 560271244.

It is a super-2 number, since 2×4421720650² = 39103227013272845000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 269482 + ... + 285418.

It is an arithmetic number, because the mean of its divisors is an integer number (177868080).

Almost surely, 2^4421720650 is an apocalyptic number.

4421720650 is a deficient number, since it is larger than the sum of its proper divisors (4115947190).

4421720650 is a wasteful number, since it uses less digits than its factorization.

4421720650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16159 (or 16154 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 31.

The square root of 4421720650 is about 66496.0198056996. The cubic root of 4421720650 is about 1641.3345089141.

Adding to 4421720650 its reverse (560271244), we get a palindrome (4981991894).

The spelling of 4421720650 in words is "four billion, four hundred twenty-one million, seven hundred twenty thousand, six hundred fifty".