20032355457888 has 96 divisors (see below), whose sum is σ = 55685944105344. Its totient is φ = 6283782408192.

The previous prime is 20032355457887. The next prime is 20032355457893. The reversal of 20032355457888 is 88875455323002.

It is a tau number, because it is divible by the number of its divisors (96).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20032355457887) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10875231 + ... + 12583137.

It is an arithmetic number, because the mean of its divisors is an integer number (580061917764).

Almost surely, 2^{20032355457888} is an apocalyptic number.

It is an amenable number.

20032355457888 is an abundant number, since it is smaller than the sum of its proper divisors (35653588647456).

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

20032355457888 is a wasteful number, since it uses less digits than its factorization.

20032355457888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1715124 (or 1715116 counting only the distinct ones).

The product of its (nonzero) digits is 64512000, while the sum is 60.

The spelling of 20032355457888 in words is "twenty trillion, thirty-two billion, three hundred fifty-five million, four hundred fifty-seven thousand, eight hundred eighty-eight".