20146900250 has 16 divisors (see below), whose sum is σ = 37714997736. Its totient is φ = 8058760000.

The previous prime is 20146900237. The next prime is 20146900253. The reversal of 20146900250 is 5200964102.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 7742064121 + 12404836129 = 87989^2 + 111377^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (20146900253) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40293551 + ... + 40294050.

Almost surely, 2^20146900250 is an apocalyptic number.

20146900250 is a deficient number, since it is larger than the sum of its proper divisors (17568097486).

20146900250 is an equidigital number, since it uses as much as digits as its factorization.

20146900250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80587618 (or 80587608 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 29.

The spelling of 20146900250 in words is "twenty billion, one hundred forty-six million, nine hundred thousand, two hundred fifty".