135915563 has 12 divisors (see below), whose sum is σ = 163207872. Its totient is φ = 112739760.

The previous prime is 135915539. The next prime is 135915581. The reversal of 135915563 is 365519531.

It is not a de Polignac number, because 135915563 - 2⁶ = 135915499 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (135915523) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 43220 + ... + 46257.

It is an arithmetic number, because the mean of its divisors is an integer number (13600656).

Almost surely, 2^135915563 is an apocalyptic number.

135915563 is a deficient number, since it is larger than the sum of its proper divisors (27292309).

135915563 is an equidigital number, since it uses as much as digits as its factorization.

135915563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89522 (or 89515 counting only the distinct ones).

The product of its digits is 60750, while the sum is 38.

The square root of 135915563 is about 11658.2830210971. The cubic root of 135915563 is about 514.1498689889.

The spelling of 135915563 in words is "one hundred thirty-five million, nine hundred fifteen thousand, five hundred sixty-three".