20150223850 has 12 divisors (see below), whose sum is σ = 37479416454. Its totient is φ = 8060089520.

The previous prime is 20150223839. The next prime is 20150223853. The reversal of 20150223850 is 5832205102.

20150223850 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 13618189809 + 6532034041 = 116697^2 + 80821^2 .

It is not an unprimeable number, because it can be changed into a prime (20150223853) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 201502189 + ... + 201502288.

Almost surely, 2^20150223850 is an apocalyptic number.

20150223850 is a deficient number, since it is larger than the sum of its proper divisors (17329192604).

20150223850 is a wasteful number, since it uses less digits than its factorization.

20150223850 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 403004489 (or 403004484 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 28.

Adding to 20150223850 its reverse (5832205102), we get a palindrome (25982428952).

The spelling of 20150223850 in words is "twenty billion, one hundred fifty million, two hundred twenty-three thousand, eight hundred fifty".