138427561235 has 16 divisors (see below), whose sum is σ = 167605416000. Its totient is φ = 109749858816.

The previous prime is 138427561199. The next prime is 138427561247. The reversal of 138427561235 is 532165724831.

138427561235 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 138427561235 - 2⁶ = 138427561171 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 138427561235.

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, 241631 + ... + 578999.

It is an arithmetic number, because the mean of its divisors is an integer number (10475338500).

Almost surely, 2^138427561235 is an apocalyptic number.

138427561235 is a deficient number, since it is larger than the sum of its proper divisors (29177854765).

138427561235 is a wasteful number, since it uses less digits than its factorization.

138427561235 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 338110.

The product of its digits is 1209600, while the sum is 47.

The spelling of 138427561235 in words is "one hundred thirty-eight billion, four hundred twenty-seven million, five hundred sixty-one thousand, two hundred thirty-five".