138843460368 has 40 divisors (see below), whose sum is σ = 398532156000. Its totient is φ = 46281153312.

The previous prime is 138843460367. The next prime is 138843460387. The reversal of 138843460368 is 863064348831.

138843460368 is a `hidden beast` number, since 1 + 3 + 88 + 43 + 460 + 3 + 68 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (138843460367) 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, 160698018 + ... + 160698881.

It is an arithmetic number, because the mean of its divisors is an integer number (9963303900).

Almost surely, 2^138843460368 is an apocalyptic number.

138843460368 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

138843460368 is an abundant number, since it is smaller than the sum of its proper divisors (259688695632).

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

138843460368 is a wasteful number, since it uses less digits than its factorization.

138843460368 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 321396916 (or 321396904 counting only the distinct ones).

The product of its (nonzero) digits is 7962624, while the sum is 54.

The spelling of 138843460368 in words is "one hundred thirty-eight billion, eight hundred forty-three million, four hundred sixty thousand, three hundred sixty-eight".