63138331632 has 20 divisors (see below), whose sum is σ = 163107356840. Its totient is φ = 21046110528.

The previous prime is 63138331603. The next prime is 63138331643. The reversal of 63138331632 is 23613383136.

It is a nude number because it is divisible by every one of its digits.

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, 657690907 + ... + 657691002.

It is an arithmetic number, because the mean of its divisors is an integer number (8155367842).

Almost surely, 2^63138331632 is an apocalyptic number.

It is an amenable number.

63138331632 is an abundant number, since it is smaller than the sum of its proper divisors (99969025208).

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

63138331632 is a wasteful number, since it uses less digits than its factorization.

63138331632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1315381920 (or 1315381914 counting only the distinct ones).

The product of its digits is 139968, while the sum is 39.

The spelling of 63138331632 in words is "sixty-three billion, one hundred thirty-eight million, three hundred thirty-one thousand, six hundred thirty-two".