221754344464 has 15 divisors (see below), whose sum is σ = 429652691967. Its totient is φ = 110876230416.

The previous prime is 221754344447. The next prime is 221754344467. The reversal of 221754344464 is 464443457122.

It is a happy number.

The square root of 221754344464 is 470908.

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

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221754344467) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 1824769 + ... + 1942495.

Almost surely, 2^221754344464 is an apocalyptic number.

221754344464 is the 470908-th square number.

It is an amenable number.

221754344464 is a deficient number, since it is larger than the sum of its proper divisors (207898347503).

221754344464 is an frugal number, since it uses more digits than its factorization.

221754344464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 235462 (or 117729 counting only the distinct ones).

The product of its digits is 2580480, while the sum is 46.

The spelling of 221754344464 in words is "two hundred twenty-one billion, seven hundred fifty-four million, three hundred forty-four thousand, four hundred sixty-four".