20501045200 has 30 divisors (see below), whose sum is σ = 49253762054. Its totient is φ = 8200417920.

The previous prime is 20501045177. The next prime is 20501045203. The reversal of 20501045200 is 254010502.

It can be written as a sum of positive squares in 3 ways, for example, as 5875529104 + 14625516096 = 76652^2 + 120936^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20501045203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 25625907 + ... + 25626706.

Almost surely, 2^20501045200 is an apocalyptic number.

20501045200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20501045200 is an abundant number, since it is smaller than the sum of its proper divisors (28752716854).

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

20501045200 is a wasteful number, since it uses less digits than its factorization.

20501045200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51252631 (or 51252620 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 19.

Adding to 20501045200 its reverse (254010502), we get a palindrome (20755055702).

The spelling of 20501045200 in words is "twenty billion, five hundred one million, forty-five thousand, two hundred".