20018200008 has 32 divisors (see below), whose sum is σ = 50056241760. Its totient is φ = 6671301120.

The previous prime is 20018199977. The next prime is 20018200051. The reversal of 20018200008 is 80000281002.

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, 27768 + ... + 202008.

It is an arithmetic number, because the mean of its divisors is an integer number (1564257555).

Almost surely, 2^20018200008 is an apocalyptic number.

It is an amenable number.

20018200008 is an abundant number, since it is smaller than the sum of its proper divisors (30038041752).

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

20018200008 is a wasteful number, since it uses less digits than its factorization.

20018200008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179037 (or 179033 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 21.

The spelling of 20018200008 in words is "twenty billion, eighteen million, two hundred thousand, eight".