22215783744 has 672 divisors, whose sum is σ = 85739996160. Its totient is φ = 5325004800.

The previous prime is 22215783727. The next prime is 22215783749. The reversal of 22215783744 is 44738751222.

22215783744 is a `hidden beast` number, since 2 + 2 + 2 + 1 + 578 + 3 + 74 + 4 = 666.

It is a tau number, because it is divible by the number of its divisors (672).

It is a self number, because there is not a number n which added to its sum of digits gives 22215783744.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22215783749) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 34549887 + ... + 34550529.

It is an arithmetic number, because the mean of its divisors is an integer number (127589280).

Almost surely, 2^22215783744 is an apocalyptic number.

22215783744 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22215783744, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42869998080).

22215783744 is an abundant number, since it is smaller than the sum of its proper divisors (63524212416).

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

22215783744 is a wasteful number, since it uses less digits than its factorization.

22215783744 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 739 (or 726 counting only the distinct ones).

The product of its digits is 752640, while the sum is 45.

The spelling of 22215783744 in words is "twenty-two billion, two hundred fifteen million, seven hundred eighty-three thousand, seven hundred forty-four".