20342032100 has 36 divisors (see below), whose sum is σ = 47537767284. Its totient is φ = 7510903680.

The previous prime is 20342032099. The next prime is 20342032121. The reversal of 20342032100 is 123024302.

It can be written as a sum of positive squares in 6 ways, for example, as 4675003876 + 15667028224 = 68374^2 + 125168^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7822559 + ... + 7825158.

Almost surely, 2^20342032100 is an apocalyptic number.

20342032100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20342032100 is an abundant number, since it is smaller than the sum of its proper divisors (27195735184).

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

20342032100 is a wasteful number, since it uses less digits than its factorization.

20342032100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15647744 (or 15647737 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 17.

Adding to 20342032100 its reverse (123024302), we get a palindrome (20465056402).

The spelling of 20342032100 in words is "twenty billion, three hundred forty-two million, thirty-two thousand, one hundred".