63138056920 has 16 divisors (see below), whose sum is σ = 142060628160. Its totient is φ = 25255222752.

The previous prime is 63138056909. The next prime is 63138056921. The reversal of 63138056920 is 2965083136.

63138056920 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63138056921) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 789225672 + ... + 789225751.

It is an arithmetic number, because the mean of its divisors is an integer number (8878789260).

Almost surely, 2^63138056920 is an apocalyptic number.

It is an amenable number.

63138056920 is an abundant number, since it is smaller than the sum of its proper divisors (78922571240).

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

63138056920 is a wasteful number, since it uses less digits than its factorization.

63138056920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1578451434 (or 1578451430 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 43.

The spelling of 63138056920 in words is "sixty-three billion, one hundred thirty-eight million, fifty-six thousand, nine hundred twenty".