138477105568 has 12 divisors (see below), whose sum is σ = 272626801650. Its totient is φ = 69238552768.

The previous prime is 138477105563. The next prime is 138477105589. The reversal of 138477105568 is 865501774831.

138477105568 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 133496698384 + 4980407184 = 365372^2 + 70572^2 .

It is not an unprimeable number, because it can be changed into a prime (138477105563) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2163704743 + ... + 2163704806.

Almost surely, 2^138477105568 is an apocalyptic number.

It is an amenable number.

138477105568 is a deficient number, since it is larger than the sum of its proper divisors (134149696082).

138477105568 is an equidigital number, since it uses as much as digits as its factorization.

138477105568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4327409559 (or 4327409551 counting only the distinct ones).

The product of its (nonzero) digits is 5644800, while the sum is 55.

The spelling of 138477105568 in words is "one hundred thirty-eight billion, four hundred seventy-seven million, one hundred five thousand, five hundred sixty-eight".