200020201818 has 16 divisors (see below), whose sum is σ = 400054825056. Its totient is φ = 66670997040.

The previous prime is 200020201793. The next prime is 200020201841. The reversal of 200020201818 is 818102020002.

It is a super-2 number, since 2×200020201818² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 416221 + ... + 757152.

It is an arithmetic number, because the mean of its divisors is an integer number (25003426566).

Almost surely, 2^200020201818 is an apocalyptic number.

200020201818 is an abundant number, since it is smaller than the sum of its proper divisors (200034623238).

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

200020201818 is a wasteful number, since it uses less digits than its factorization.

200020201818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1201789.

The product of its (nonzero) digits is 512, while the sum is 24.

The spelling of 200020201818 in words is "two hundred billion, twenty million, two hundred one thousand, eight hundred eighteen".