135263726644 has 24 divisors (see below), whose sum is σ = 250846533000. Its totient is φ = 63707051520.

The previous prime is 135263726629. The next prime is 135263726693. The reversal of 135263726644 is 446627362531.

It can be written as a sum of positive squares in 4 ways, for example, as 32490000 + 135231236644 = 5700^2 + 367738^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14215569 + ... + 14225080.

It is an arithmetic number, because the mean of its divisors is an integer number (10451938875).

Almost surely, 2^135263726644 is an apocalyptic number.

It is an amenable number.

135263726644 is a deficient number, since it is larger than the sum of its proper divisors (115582806356).

135263726644 is a wasteful number, since it uses less digits than its factorization.

135263726644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28440723 (or 28440721 counting only the distinct ones).

The product of its digits is 4354560, while the sum is 49.

The spelling of 135263726644 in words is "one hundred thirty-five billion, two hundred sixty-three million, seven hundred twenty-six thousand, six hundred forty-four".