20003555743272 has 80 divisors (see below), whose sum is σ = 56552108722560. Its totient is φ = 6605535518496.

The previous prime is 20003555743267. The next prime is 20003555743273. The reversal of 20003555743272 is 27234755530002.

It is a happy number.

20003555743272 is a `hidden beast` number, since 2 + 0 + 0 + 0 + 3 + 5 + 5 + 574 + 3 + 2 + 72 = 666.

It is not an unprimeable number, because it can be changed into a prime (20003555743273) by changing a digit.

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 19 ways as a sum of consecutive naturals, for example, 144181528 + ... + 144320199.

It is an arithmetic number, because the mean of its divisors is an integer number (706901359032).

Almost surely, 2^{20003555743272} is an apocalyptic number.

It is an amenable number.

20003555743272 is an abundant number, since it is smaller than the sum of its proper divisors (36548552979288).

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

20003555743272 is a wasteful number, since it uses less digits than its factorization.

20003555743272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 288501852 (or 288501839 counting only the distinct ones).

The product of its (nonzero) digits is 1764000, while the sum is 45.

The spelling of 20003555743272 in words is "twenty trillion, three billion, five hundred fifty-five million, seven hundred forty-three thousand, two hundred seventy-two".