20432203543188 has 72 divisors (see below), whose sum is σ = 54401902711520. Its totient is φ = 6448060054080.

The previous prime is 20432203543187. The next prime is 20432203543249. The reversal of 20432203543188 is 88134530223402.

20432203543188 is a `hidden beast` number, since 2 + 0 + 4 + 3 + 2 + 20 + 3 + 543 + 1 + 88 = 666.

It is a super-2 number, since 2×20432203543188² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20432203543183) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8708395 + ... + 10802802.

Almost surely, 2^{20432203543188} is an apocalyptic number.

It is an amenable number.

20432203543188 is an abundant number, since it is smaller than the sum of its proper divisors (33969699168332).

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

20432203543188 is a wasteful number, since it uses less digits than its factorization.

20432203543188 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19512757 (or 19512752 counting only the distinct ones).

The product of its (nonzero) digits is 1105920, while the sum is 45.

The spelling of 20432203543188 in words is "twenty trillion, four hundred thirty-two billion, two hundred three million, five hundred forty-three thousand, one hundred eighty-eight".