135508303615 has 4 divisors (see below), whose sum is σ = 162609964344. Its totient is φ = 108406642888.

The previous prime is 135508303613. The next prime is 135508303627. The reversal of 135508303615 is 516303805531.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 135508303615 - 2¹ = 135508303613 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135508303613) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13550830357 + ... + 13550830366.

It is an arithmetic number, because the mean of its divisors is an integer number (40652491086).

Almost surely, 2^135508303615 is an apocalyptic number.

135508303615 is a deficient number, since it is larger than the sum of its proper divisors (27101660729).

135508303615 is an equidigital number, since it uses as much as digits as its factorization.

135508303615 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27101660728.

The product of its (nonzero) digits is 162000, while the sum is 40.

The spelling of 135508303615 in words is "one hundred thirty-five billion, five hundred eight million, three hundred three thousand, six hundred fifteen".