22154240550 has 192 divisors, whose sum is σ = 61981032960. Its totient is φ = 5196026880.

The previous prime is 22154240477. The next prime is 22154240621. The reversal of 22154240550 is 5504245122.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 13768146 + ... + 13769754.

It is an arithmetic number, because the mean of its divisors is an integer number (322817880).

Almost surely, 2^22154240550 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22154240550, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30990516480).

22154240550 is an abundant number, since it is smaller than the sum of its proper divisors (39826792410).

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

22154240550 is a wasteful number, since it uses less digits than its factorization.

22154240550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1967 (or 1962 counting only the distinct ones).

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

Adding to 22154240550 its reverse (5504245122), we get a palindrome (27658485672).

The spelling of 22154240550 in words is "twenty-two billion, one hundred fifty-four million, two hundred forty thousand, five hundred fifty".