2136220717 has 4 divisors (see below), whose sum is σ = 2161958400. Its totient is φ = 2110483036.

The previous prime is 2136220699. The next prime is 2136220727. The reversal of 2136220717 is 7170226312.

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 a de Polignac number, because none of the positive numbers 2^k-2136220717 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2136220727) 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, 12868717 + ... + 12868882.

It is an arithmetic number, because the mean of its divisors is an integer number (540489600).

Almost surely, 2^2136220717 is an apocalyptic number.

It is an amenable number.

2136220717 is a deficient number, since it is larger than the sum of its proper divisors (25737683).

2136220717 is an equidigital number, since it uses as much as digits as its factorization.

2136220717 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25737682.

The product of its (nonzero) digits is 7056, while the sum is 31.

The square root of 2136220717 is about 46219.2678111629. The cubic root of 2136220717 is about 1287.8996964587.

The spelling of 2136220717 in words is "two billion, one hundred thirty-six million, two hundred twenty thousand, seven hundred seventeen".