20331634900 has 36 divisors (see below), whose sum is σ = 44260673212. Its totient is φ = 8106658560.

The previous prime is 20331634861. The next prime is 20331634901. The reversal of 20331634900 is 943613302.

It can be written as a sum of positive squares in 6 ways, for example, as 1173199504 + 19158435396 = 34252^2 + 138414^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20331634901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 293487 + ... + 356086.

Almost surely, 2^20331634900 is an apocalyptic number.

20331634900 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20331634900 is an abundant number, since it is smaller than the sum of its proper divisors (23929038312).

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

20331634900 is a wasteful number, since it uses less digits than its factorization.

20331634900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 649900 (or 649893 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 31.

The spelling of 20331634900 in words is "twenty billion, three hundred thirty-one million, six hundred thirty-four thousand, nine hundred".