135621315005 has 16 divisors (see below), whose sum is σ = 177591222144. Its totient is φ = 98605577280.

The previous prime is 135621314951. The next prime is 135621315007. The reversal of 135621315005 is 500513126531.

It is a de Polignac number, because none of the positive numbers 2^k-135621315005 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135621315007) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 155582 + ... + 543551.

It is an arithmetic number, because the mean of its divisors is an integer number (11099451384).

Almost surely, 2^135621315005 is an apocalyptic number.

It is an amenable number.

135621315005 is a deficient number, since it is larger than the sum of its proper divisors (41969907139).

135621315005 is a wasteful number, since it uses less digits than its factorization.

135621315005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 702676.

The product of its (nonzero) digits is 13500, while the sum is 32.

The spelling of 135621315005 in words is "one hundred thirty-five billion, six hundred twenty-one million, three hundred fifteen thousand, five".