138764627965 has 16 divisors (see below), whose sum is σ = 166725518400. Its totient is φ = 110873158272.

The previous prime is 138764627899. The next prime is 138764627983. The reversal of 138764627965 is 569726467831.

138764627965 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 138764627965 - 2²³ = 138756239357 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 138764627897 and 138764627906.

It is a congruent number.

It is an unprimeable number.

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, 15730326 + ... + 15739144.

It is an arithmetic number, because the mean of its divisors is an integer number (10420344900).

Almost surely, 2^138764627965 is an apocalyptic number.

It is an amenable number.

138764627965 is a deficient number, since it is larger than the sum of its proper divisors (27960890435).

138764627965 is a wasteful number, since it uses less digits than its factorization.

138764627965 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12396.

The product of its digits is 91445760, while the sum is 64.

The spelling of 138764627965 in words is "one hundred thirty-eight billion, seven hundred sixty-four million, six hundred twenty-seven thousand, nine hundred sixty-five".