22661165250 has 96 divisors (see below), whose sum is σ = 61505224560. Its totient is φ = 6020352000.

The previous prime is 22661165231. The next prime is 22661165251. The reversal of 22661165250 is 5256116622.

It can be written as a sum of positive squares in 8 ways, for example, as 99022401 + 22562142849 = 9951^2 + 150207^2 .

It is not an unprimeable number, because it can be changed into a prime (22661165251) by changing a digit.

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 47 ways as a sum of consecutive naturals, for example, 586530 + ... + 623970.

Almost surely, 2^22661165250 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22661165250, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30752612280).

22661165250 is an abundant number, since it is smaller than the sum of its proper divisors (38844059310).

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

22661165250 is a wasteful number, since it uses less digits than its factorization.

22661165250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37733 (or 37720 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 36.

The spelling of 22661165250 in words is "twenty-two billion, six hundred sixty-one million, one hundred sixty-five thousand, two hundred fifty".