138636766077 has 16 divisors (see below), whose sum is σ = 190915591680. Its totient is φ = 89431402032.

The previous prime is 138636766061. The next prime is 138636766171. The reversal of 138636766077 is 770667636831.

138636766077 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 138636766077 - 2⁴ = 138636766061 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 138636766077.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138636766277) 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, 5008177 + ... + 5035782.

It is an arithmetic number, because the mean of its divisors is an integer number (11932224480).

Almost surely, 2^138636766077 is an apocalyptic number.

It is an amenable number.

138636766077 is a deficient number, since it is larger than the sum of its proper divisors (52278825603).

138636766077 is a wasteful number, since it uses less digits than its factorization.

138636766077 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10044112.

The product of its (nonzero) digits is 32006016, while the sum is 60.

The spelling of 138636766077 in words is "one hundred thirty-eight billion, six hundred thirty-six million, seven hundred sixty-six thousand, seventy-seven".