138447115480 has 32 divisors (see below), whose sum is σ = 318750339600. Its totient is φ = 54090965376.

The previous prime is 138447115403. The next prime is 138447115487. The reversal of 138447115480 is 84511744831.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 138447115480.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138447115487) 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, 40244535 + ... + 40247974.

Almost surely, 2^138447115480 is an apocalyptic number.

138447115480 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

138447115480 is an abundant number, since it is smaller than the sum of its proper divisors (180303224120).

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

138447115480 is a wasteful number, since it uses less digits than its factorization.

138447115480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80492563 (or 80492559 counting only the distinct ones).

The product of its (nonzero) digits is 430080, while the sum is 46.

The spelling of 138447115480 in words is "one hundred thirty-eight billion, four hundred forty-seven million, one hundred fifteen thousand, four hundred eighty".