223734818944 has 128 divisors (see below), whose sum is σ = 566277626880. Its totient is φ = 85655162880.

The previous prime is 223734818933. The next prime is 223734818969. The reversal of 223734818944 is 449818437322.

It is a tau number, because it is divible by the number of its divisors (128).

It is a super-2 number, since 2×223734818944² (a number of 24 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (55) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 51282 + ... + 670894.

It is an arithmetic number, because the mean of its divisors is an integer number (4424043960).

Almost surely, 2^223734818944 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 223734818944, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (283138813440).

223734818944 is an abundant number, since it is smaller than the sum of its proper divisors (342542807936).

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

223734818944 is a wasteful number, since it uses less digits than its factorization.

223734818944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 619678 (or 619666 counting only the distinct ones).

The product of its digits is 9289728, while the sum is 55.

The spelling of 223734818944 in words is "two hundred twenty-three billion, seven hundred thirty-four million, eight hundred eighteen thousand, nine hundred forty-four".