22514451440 has 80 divisors (see below), whose sum is σ = 56438866848. Its totient is φ = 8303275008.

The previous prime is 22514451431. The next prime is 22514451473. The reversal of 22514451440 is 4415441522.

It is a tau number, because it is divible by the number of its divisors (80).

It is a junction number, because it is equal to n+sod(n) for n = 22514451397 and 22514451406.

It is a congruent number.

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, 906062 + ... + 930578.

Almost surely, 2^22514451440 is an apocalyptic number.

22514451440 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 22514451440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28219433424).

22514451440 is an abundant number, since it is smaller than the sum of its proper divisors (33924415408).

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

22514451440 is a wasteful number, since it uses less digits than its factorization.

22514451440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25426 (or 25420 counting only the distinct ones).

The product of its (nonzero) digits is 25600, while the sum is 32.

Adding to 22514451440 its reverse (4415441522), we get a palindrome (26929892962).

The spelling of 22514451440 in words is "twenty-two billion, five hundred fourteen million, four hundred fifty-one thousand, four hundred forty".