20641206250 has 192 divisors, whose sum is σ = 46949995008. Its totient is φ = 6652800000.

The previous prime is 20641206203. The next prime is 20641206259. The reversal of 20641206250 is 5260214602.

It is not an unprimeable number, because it can be changed into a prime (20641206259) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 73456110 + ... + 73456390.

It is an arithmetic number, because the mean of its divisors is an integer number (244531224).

Almost surely, 2^20641206250 is an apocalyptic number.

20641206250 is an abundant number, since it is smaller than the sum of its proper divisors (26308788758).

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

20641206250 is an equidigital number, since it uses as much as digits as its factorization.

20641206250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 411 (or 391 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 28.

The spelling of 20641206250 in words is "twenty billion, six hundred forty-one million, two hundred six thousand, two hundred fifty".