20201820200 has 48 divisors (see below), whose sum is σ = 47400193500. Its totient is φ = 8006584320.

The previous prime is 20201820187. The next prime is 20201820227. The reversal of 20201820200 is 202810202.

It can be written as a sum of positive squares in 6 ways, for example, as 4928320804 + 15273499396 = 70202^2 + 123586^2 .

It is a super-2 number, since 2×20201820200² (a number of 21 digits) contains 22 as substring.

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, 441545 + ... + 485144.

Almost surely, 2^20201820200 is an apocalyptic number.

20201820200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20201820200 is an abundant number, since it is smaller than the sum of its proper divisors (27198373300).

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

20201820200 is a wasteful number, since it uses less digits than its factorization.

20201820200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 926814 (or 926805 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

The spelling of 20201820200 in words is "twenty billion, two hundred one million, eight hundred twenty thousand, two hundred".