22550521440 has 96 divisors (see below), whose sum is σ = 71402488416. Its totient is φ = 5982289920.

The previous prime is 22550521439. The next prime is 22550521451. The reversal of 22550521440 is 4412505522.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 22550521398 and 22550521407.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29071 + ... + 214350.

It is an arithmetic number, because the mean of its divisors is an integer number (743775921).

Almost surely, 2^22550521440 is an apocalyptic number.

22550521440 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 22550521440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35701244208).

22550521440 is an abundant number, since it is smaller than the sum of its proper divisors (48851966976).

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

22550521440 is a wasteful number, since it uses less digits than its factorization.

22550521440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 243632 (or 243624 counting only the distinct ones).

The product of its (nonzero) digits is 16000, while the sum is 30.

The spelling of 22550521440 in words is "twenty-two billion, five hundred fifty million, five hundred twenty-one thousand, four hundred forty".