136215513 has 40 divisors (see below), whose sum is σ = 235572480. Its totient is φ = 76826880.

The previous prime is 136215493. The next prime is 136215517. The reversal of 136215513 is 315512631.

136215513 is a `hidden beast` number, since 136 + 2 + 15 + 513 = 666.

It is not a de Polignac number, because 136215513 - 2⁶ = 136215449 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (136215517) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 43273 + ... + 46313.

It is an arithmetic number, because the mean of its divisors is an integer number (5889312).

Almost surely, 2^136215513 is an apocalyptic number.

It is an amenable number.

136215513 is a deficient number, since it is larger than the sum of its proper divisors (99356967).

136215513 is an equidigital number, since it uses as much as digits as its factorization.

136215513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3139 (or 3130 counting only the distinct ones).

The product of its digits is 2700, while the sum is 27.

The square root of 136215513 is about 11671.1401756641. The cubic root of 136215513 is about 514.5278142873.

The spelling of 136215513 in words is "one hundred thirty-six million, two hundred fifteen thousand, five hundred thirteen".