135865503908 has 6 divisors (see below), whose sum is σ = 237764631846. Its totient is φ = 67932751952.

The previous prime is 135865503887. The next prime is 135865503913. The reversal of 135865503908 is 809305568531.

It can be written as a sum of positive squares in only one way, i.e., 91741140544 + 44124363364 = 302888^2 + 210058^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 135865503908.

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, 16983187985 + ... + 16983187992.

It is an arithmetic number, because the mean of its divisors is an integer number (39627438641).

Almost surely, 2^135865503908 is an apocalyptic number.

It is an amenable number.

135865503908 is a deficient number, since it is larger than the sum of its proper divisors (101899127938).

135865503908 is a wasteful number, since it uses less digits than its factorization.

135865503908 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33966375981 (or 33966375979 counting only the distinct ones).

The product of its (nonzero) digits is 3888000, while the sum is 53.

The spelling of 135865503908 in words is "one hundred thirty-five billion, eight hundred sixty-five million, five hundred three thousand, nine hundred eight".