20037843936 has 144 divisors (see below), whose sum is σ = 64240117200. Its totient is φ = 6072042240.

The previous prime is 20037843923. The next prime is 20037843937. The reversal of 20037843936 is 63934873002.

20037843936 is a `hidden beast` number, since 200 + 3 + 7 + 8 + 439 + 3 + 6 = 666.

It is a tau number, because it is divible by the number of its divisors (144).

It is a junction number, because it is equal to n+sod(n) for n = 20037843891 and 20037843900.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20037843937) 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 23 ways as a sum of consecutive naturals, for example, 8710 + ... + 200378.

It is an arithmetic number, because the mean of its divisors is an integer number (446111925).

Almost surely, 2^20037843936 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20037843936, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32120058600).

20037843936 is an abundant number, since it is smaller than the sum of its proper divisors (44202273264).

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

20037843936 is a wasteful number, since it uses less digits than its factorization.

20037843936 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 191710 (or 191685 counting only the distinct ones).

The product of its (nonzero) digits is 653184, while the sum is 45.

The spelling of 20037843936 in words is "twenty billion, thirty-seven million, eight hundred forty-three thousand, nine hundred thirty-six".