138277068376 has 8 divisors (see below), whose sum is σ = 259269503220. Its totient is φ = 69138534184.

The previous prime is 138277068337. The next prime is 138277068403. The reversal of 138277068376 is 673860772831.

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 138277068376.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8642316766 + ... + 8642316781.

Almost surely, 2^138277068376 is an apocalyptic number.

It is an amenable number.

138277068376 is a deficient number, since it is larger than the sum of its proper divisors (120992434844).

138277068376 is a wasteful number, since it uses less digits than its factorization.

138277068376 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17284633553 (or 17284633549 counting only the distinct ones).

The product of its (nonzero) digits is 14224896, while the sum is 58.

The spelling of 138277068376 in words is "one hundred thirty-eight billion, two hundred seventy-seven million, sixty-eight thousand, three hundred seventy-six".