135996513 has 4 divisors (see below), whose sum is σ = 181328688. Its totient is φ = 90664340.

The previous prime is 135996479. The next prime is 135996577. The reversal of 135996513 is 315699531.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 135996513 - 2⁶ = 135996449 is a prime.

It is not an unprimeable number, because it can be changed into a prime (135996313) 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, 22666083 + ... + 22666088.

It is an arithmetic number, because the mean of its divisors is an integer number (45332172).

Almost surely, 2^135996513 is an apocalyptic number.

It is an amenable number.

135996513 is a deficient number, since it is larger than the sum of its proper divisors (45332175).

135996513 is an equidigital number, since it uses as much as digits as its factorization.

135996513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45332174.

The product of its digits is 109350, while the sum is 42.

The square root of 135996513 is about 11661.7542848407. The cubic root of 135996513 is about 514.2519229672.

The spelling of 135996513 in words is "one hundred thirty-five million, nine hundred ninety-six thousand, five hundred thirteen".