4421523918564 has 45 divisors (see below), whose sum is σ = 11558835857107. Its totient is φ = 1473828689736.

The previous prime is 4421523918521. The next prime is 4421523918571. The reversal of 4421523918564 is 4658193251244.

The square root of 4421523918564 is 2102742.

It is a perfect power (a square), and thus also a powerful number.

4421523918564 is a `hidden beast` number, since 4 + 4 + 21 + 52 + 3 + 9 + 1 + 8 + 564 = 666.

It is a super-3 number, since 3×4421523918564³ (a number of 39 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 4421523918564.

It is an unprimeable number.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 37790947 + ... + 37907765.

Almost surely, 2^{4421523918564} is an apocalyptic number.

4421523918564 is the 2102742-nd square number.

It is an amenable number.

4421523918564 is an abundant number, since it is smaller than the sum of its proper divisors (7137311938543).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

4421523918564 is an frugal number, since it uses more digits than its factorization.

4421523918564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 233654 (or 116824 counting only the distinct ones).

The product of its digits is 8294400, while the sum is 54.

The spelling of 4421523918564 in words is "four trillion, four hundred twenty-one billion, five hundred twenty-three million, nine hundred eighteen thousand, five hundred sixty-four".