22051855392 has 144 divisors (see below), whose sum is σ = 69821462592. Its totient is φ = 5968857600.

The previous prime is 22051855387. The next prime is 22051855409. The reversal of 22051855392 is 29355815022.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 197142 + ... + 288042.

It is an arithmetic number, because the mean of its divisors is an integer number (484871268).

Almost surely, 2^22051855392 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 22051855392, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34910731296).

22051855392 is an abundant number, since it is smaller than the sum of its proper divisors (47769607200).

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

22051855392 is a wasteful number, since it uses less digits than its factorization.

22051855392 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90959 (or 90932 counting only the distinct ones).

The product of its (nonzero) digits is 216000, while the sum is 42.

The spelling of 22051855392 in words is "twenty-two billion, fifty-one million, eight hundred fifty-five thousand, three hundred ninety-two".