18518520200 has 48 divisors (see below), whose sum is σ = 43076647680. Its totient is φ = 7403780160.

The previous prime is 18518520199. The next prime is 18518520217. The reversal of 18518520200 is 202581581.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 406997 + ... + 450203.

It is an arithmetic number, because the mean of its divisors is an integer number (897430160).

Almost surely, 2^18518520200 is an apocalyptic number.

18518520200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18518520200 is an abundant number, since it is smaller than the sum of its proper divisors (24558127480).

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

18518520200 is a wasteful number, since it uses less digits than its factorization.

18518520200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45366 (or 45357 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 32.

The spelling of 18518520200 in words is "eighteen billion, five hundred eighteen million, five hundred twenty thousand, two hundred".