22541145240 has 128 divisors (see below), whose sum is σ = 73266716160. Its totient is φ = 5525796864.

The previous prime is 22541145199. The next prime is 22541145269. The reversal of 22541145240 is 4254114522.

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 = 22541145198 and 22541145207.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 40764 + ... + 216203.

It is an arithmetic number, because the mean of its divisors is an integer number (572396220).

Almost surely, 2^22541145240 is an apocalyptic number.

22541145240 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 22541145240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36633358080).

22541145240 is an abundant number, since it is smaller than the sum of its proper divisors (50725570920).

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

22541145240 is a wasteful number, since it uses less digits than its factorization.

22541145240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 257041 (or 257037 counting only the distinct ones).

The product of its (nonzero) digits is 12800, while the sum is 30.

Adding to 22541145240 its reverse (4254114522), we get a palindrome (26795259762).

The spelling of 22541145240 in words is "twenty-two billion, five hundred forty-one million, one hundred forty-five thousand, two hundred forty".