138968903448 has 64 divisors (see below), whose sum is σ = 386085744000. Its totient is φ = 46315646496.

The previous prime is 138968903401. The next prime is 138968903449. The reversal of 138968903448 is 844309869831.

138968903448 is a `hidden beast` number, since 13 + 8 + 96 + 8 + 90 + 3 + 448 = 666.

138968903448 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×138968903448² (a number of 23 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (63) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138968903449) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1416811 + ... + 1511717.

It is an arithmetic number, because the mean of its divisors is an integer number (6032589750).

Almost surely, 2^138968903448 is an apocalyptic number.

138968903448 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

138968903448 is an abundant number, since it is smaller than the sum of its proper divisors (247116840552).

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

138968903448 is a wasteful number, since it uses less digits than its factorization.

138968903448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101701 (or 101691 counting only the distinct ones).

The product of its (nonzero) digits is 35831808, while the sum is 63.

The spelling of 138968903448 in words is "one hundred thirty-eight billion, nine hundred sixty-eight million, nine hundred three thousand, four hundred forty-eight".