22361779440 has 1920 divisors, whose sum is σ = 112312811520. Its totient is φ = 3832012800.

The previous prime is 22361779423. The next prime is 22361779471. The reversal of 22361779440 is 4497716322.

22361779440 is a `hidden beast` number, since 2 + 2 + 36 + 177 + 9 + 440 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 383 ways as a sum of consecutive naturals, for example, 314954605 + ... + 314954675.

It is an arithmetic number, because the mean of its divisors is an integer number (58496256).

Almost surely, 2^22361779440 is an apocalyptic number.

22361779440 is a gapful number since it is divisible by the number (20) 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 22361779440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (56156405760).

22361779440 is an abundant number, since it is smaller than the sum of its proper divisors (89951032080).

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

22361779440 is a wasteful number, since it uses less digits than its factorization.

22361779440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163 (or 154 counting only the distinct ones).

The product of its (nonzero) digits is 508032, while the sum is 45.

The spelling of 22361779440 in words is "twenty-two billion, three hundred sixty-one million, seven hundred seventy-nine thousand, four hundred forty".