18700055200 has 36 divisors (see below), whose sum is σ = 45651511710. Its totient is φ = 7480021760.

The previous prime is 18700055191. The next prime is 18700055207. The reversal of 18700055200 is 255000781.

It can be written as a sum of positive squares in 3 ways, for example, as 16911441936 + 1788613264 = 130044^2 + 42292^2 .

It is not an unprimeable number, because it can be changed into a prime (18700055207) 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, 11686735 + ... + 11688334.

Almost surely, 2^18700055200 is an apocalyptic number.

18700055200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18700055200 is an abundant number, since it is smaller than the sum of its proper divisors (26951456510).

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

18700055200 is a wasteful number, since it uses less digits than its factorization.

18700055200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23375089 (or 23375076 counting only the distinct ones).

The product of its (nonzero) digits is 2800, while the sum is 28.

Adding to 18700055200 its reverse (255000781), we get a palindrome (18955055981).

The spelling of 18700055200 in words is "eighteen billion, seven hundred million, fifty-five thousand, two hundred".