22210497540 has 576 divisors, whose sum is σ = 88486836480. Its totient is φ = 4573255680.

The previous prime is 22210497527. The next prime is 22210497541. The reversal of 22210497540 is 4579401222.

22210497540 is a `hidden beast` number, since 2 + 2 + 2 + 104 + 9 + 7 + 540 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 22210497495 and 22210497504.

It is not an unprimeable number, because it can be changed into a prime (22210497541) by changing a digit.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 39874942 + ... + 39875498.

It is an arithmetic number, because the mean of its divisors is an integer number (153622980).

Almost surely, 2^22210497540 is an apocalyptic number.

22210497540 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 22210497540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (44243418240).

22210497540 is an abundant number, since it is smaller than the sum of its proper divisors (66276338940).

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

22210497540 is a wasteful number, since it uses less digits than its factorization.

22210497540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 737 (or 722 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 36.

Adding to 22210497540 its reverse (4579401222), we get a palindrome (26789898762).

The spelling of 22210497540 in words is "twenty-two billion, two hundred ten million, four hundred ninety-seven thousand, five hundred forty".