136705617242015 has 4 divisors (see below), whose sum is σ = 164046740690424. Its totient is φ = 109364493793608.

The previous prime is 136705617241993. The next prime is 136705617242027. The reversal of 136705617242015 is 510242716507631.

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 136705617242015 - 2³⁴ = 136688437372831 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13670561724197 + ... + 13670561724206.

It is an arithmetic number, because the mean of its divisors is an integer number (41011685172606).

Almost surely, 2^{136705617242015} is an apocalyptic number.

136705617242015 is a deficient number, since it is larger than the sum of its proper divisors (27341123448409).

136705617242015 is an equidigital number, since it uses as much as digits as its factorization.

136705617242015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27341123448408.

The product of its (nonzero) digits is 2116800, while the sum is 50.

The spelling of 136705617242015 in words is "one hundred thirty-six trillion, seven hundred five billion, six hundred seventeen million, two hundred forty-two thousand, fifteen".