61223050000 has 180 divisors, whose sum is σ = 172478530980. Its totient is φ = 20989920000.

The previous prime is 61223049989. The next prime is 61223050013. The reversal of 61223050000 is 5032216.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 30224517904 + 30998532096 = 173852^2 + 176064^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 61223050000.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 2437506 + ... + 2462494.

It is an arithmetic number, because the mean of its divisors is an integer number (958214061).

Almost surely, 2^61223050000 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 61223050000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (86239265490).

61223050000 is an abundant number, since it is smaller than the sum of its proper divisors (111255480980).

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

61223050000 is an equidigital number, since it uses as much as digits as its factorization.

61223050000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25036 (or 25003 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 19.

Adding to 61223050000 its reverse (5032216), we get a palindrome (61228082216).

The spelling of 61223050000 in words is "sixty-one billion, two hundred twenty-three million, fifty thousand".