138981296448 has 112 divisors (see below), whose sum is σ = 414176626560. Its totient is φ = 45692439552.

The previous prime is 138981296431. The next prime is 138981296491. The reversal of 138981296448 is 844692189831.

138981296448 is a `hidden beast` number, since 1 + 3 + 8 + 98 + 12 + 96 + 448 = 666.

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 15 ways as a sum of consecutive naturals, for example, 424740 + ... + 677027.

Almost surely, 2^138981296448 is an apocalyptic number.

138981296448 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

138981296448 is an abundant number, since it is smaller than the sum of its proper divisors (275195330112).

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

138981296448 is a wasteful number, since it uses less digits than its factorization.

138981296448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1101861 (or 1101845 counting only the distinct ones).

The product of its digits is 23887872, while the sum is 63.

The spelling of 138981296448 in words is "one hundred thirty-eight billion, nine hundred eighty-one million, two hundred ninety-six thousand, four hundred forty-eight".