138463881480 has 96 divisors (see below), whose sum is σ = 469573191360. Its totient is φ = 35318321280.

The previous prime is 138463881463. The next prime is 138463881529. The reversal of 138463881480 is 84188364831.

138463881480 is a `hidden beast` number, since 1 + 3 + 84 + 6 + 3 + 8 + 81 + 480 = 666.

138463881480 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8353066 + ... + 8369625.

It is an arithmetic number, because the mean of its divisors is an integer number (4891387410).

Almost surely, 2^138463881480 is an apocalyptic number.

138463881480 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

138463881480 is an abundant number, since it is smaller than the sum of its proper divisors (331109309880).

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

138463881480 is a wasteful number, since it uses less digits than its factorization.

138463881480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16722731 (or 16722724 counting only the distinct ones).

The product of its (nonzero) digits is 3538944, while the sum is 54.

The spelling of 138463881480 in words is "one hundred thirty-eight billion, four hundred sixty-three million, eight hundred eighty-one thousand, four hundred eighty".