63375381138 has 16 divisors (see below), whose sum is σ = 128487074976. Its totient is φ = 20835741600.

The previous prime is 63375381133. The next prime is 63375381191. The reversal of 63375381138 is 83118357336.

63375381138 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (63375381133) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 72345888 + ... + 72346763.

It is an arithmetic number, because the mean of its divisors is an integer number (8030442186).

Almost surely, 2^63375381138 is an apocalyptic number.

63375381138 is an abundant number, since it is smaller than the sum of its proper divisors (65111693838).

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

63375381138 is a wasteful number, since it uses less digits than its factorization.

63375381138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144692729.

The product of its digits is 1088640, while the sum is 48.

The spelling of 63375381138 in words is "sixty-three billion, three hundred seventy-five million, three hundred eighty-one thousand, one hundred thirty-eight".