138767317628 has 48 divisors (see below), whose sum is σ = 265160589120. Its totient is φ = 63354829824.

The previous prime is 138767317621. The next prime is 138767317649. The reversal of 138767317628 is 826713767831.

138767317628 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138767317621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 204173 + ... + 564996.

It is an arithmetic number, because the mean of its divisors is an integer number (5524178940).

Almost surely, 2^138767317628 is an apocalyptic number.

It is an amenable number.

138767317628 is a deficient number, since it is larger than the sum of its proper divisors (126393271492).

138767317628 is a wasteful number, since it uses less digits than its factorization.

138767317628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 769286 (or 769284 counting only the distinct ones).

The product of its digits is 14224896, while the sum is 59.

The spelling of 138767317628 in words is "one hundred thirty-eight billion, seven hundred sixty-seven million, three hundred seventeen thousand, six hundred twenty-eight".