20243621250 has 400 divisors, whose sum is σ = 63277869600. Its totient is φ = 4805568000.

The previous prime is 20243621221. The next prime is 20243621261. The reversal of 20243621250 is 5212634202.

It is a happy number.

20243621250 is a `hidden beast` number, since 202 + 436 + 2 + 1 + 25 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 199 ways as a sum of consecutive naturals, for example, 32703441 + ... + 32704059.

It is an arithmetic number, because the mean of its divisors is an integer number (158194674).

Almost surely, 2^20243621250 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20243621250, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31638934800).

20243621250 is an abundant number, since it is smaller than the sum of its proper divisors (43034248350).

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

20243621250 is a wasteful number, since it uses less digits than its factorization.

20243621250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 689 (or 665 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

The spelling of 20243621250 in words is "twenty billion, two hundred forty-three million, six hundred twenty-one thousand, two hundred fifty".