208111018020 has 48 divisors (see below), whose sum is σ = 583054512768. Its totient is φ = 55463541760.

The previous prime is 208111018007. The next prime is 208111018021. The reversal of 208111018020 is 20810111802.

It is not an unprimeable number, because it can be changed into a prime (208111018021) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 920136 + ... + 1123775.

It is an arithmetic number, because the mean of its divisors is an integer number (12146969016).

Almost surely, 2^208111018020 is an apocalyptic number.

208111018020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

208111018020 is an abundant number, since it is smaller than the sum of its proper divisors (374943494748).

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

208111018020 is a wasteful number, since it uses less digits than its factorization.

208111018020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2045620 (or 2045618 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 24.

Adding to 208111018020 its reverse (20810111802), we get a palindrome (228921129822).

The spelling of 208111018020 in words is "two hundred eight billion, one hundred eleven million, eighteen thousand, twenty".