136217758817 has 4 divisors (see below), whose sum is σ = 155677438656. Its totient is φ = 116758078980.

The previous prime is 136217758783. The next prime is 136217758841. The reversal of 136217758817 is 718857712631.

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 136217758817 - 2¹⁶ = 136217693281 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (136217758717) 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, 9729839909 + ... + 9729839922.

It is an arithmetic number, because the mean of its divisors is an integer number (38919359664).

Almost surely, 2^136217758817 is an apocalyptic number.

It is an amenable number.

136217758817 is a deficient number, since it is larger than the sum of its proper divisors (19459679839).

136217758817 is an equidigital number, since it uses as much as digits as its factorization.

136217758817 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19459679838.

The product of its digits is 3951360, while the sum is 56.

The spelling of 136217758817 in words is "one hundred thirty-six billion, two hundred seventeen million, seven hundred fifty-eight thousand, eight hundred seventeen".