63725817788020 has 12 divisors (see below), whose sum is σ = 133824217354884. Its totient is φ = 25490327115200.

The previous prime is 63725817787987. The next prime is 63725817788041. The reversal of 63725817788020 is 2088771852736.

It can be written as a sum of positive squares in 2 ways, for example, as 29325669041124 + 34400148746896 = 5415318^2 + 5865164^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1593145444681 + ... + 1593145444720.

It is an arithmetic number, because the mean of its divisors is an integer number (11152018112907).

Almost surely, 2^{63725817788020} is an apocalyptic number.

It is an amenable number.

63725817788020 is an abundant number, since it is smaller than the sum of its proper divisors (70098399566864).

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

63725817788020 is a wasteful number, since it uses less digits than its factorization.

63725817788020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3186290889410 (or 3186290889408 counting only the distinct ones).

The product of its (nonzero) digits is 63221760, while the sum is 64.

The spelling of 63725817788020 in words is "sixty-three trillion, seven hundred twenty-five billion, eight hundred seventeen million, seven hundred eighty-eight thousand, twenty".