2136256717 has 8 divisors (see below), whose sum is σ = 2520192512. Its totient is φ = 1772010000.

The previous prime is 2136256691. The next prime is 2136256723. The reversal of 2136256717 is 7176526312.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2136256717 - 2²⁷ = 2002038989 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2136256717.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2136256747) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4922034 + ... + 4922467.

It is an arithmetic number, because the mean of its divisors is an integer number (315024064).

Almost surely, 2^2136256717 is an apocalyptic number.

It is an amenable number.

2136256717 is a deficient number, since it is larger than the sum of its proper divisors (383935795).

2136256717 is an equidigital number, since it uses as much as digits as its factorization.

2136256717 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9844539.

The product of its digits is 105840, while the sum is 40.

The square root of 2136256717 is about 46219.6572574916. The cubic root of 2136256717 is about 1287.9069310621.

The spelling of 2136256717 in words is "two billion, one hundred thirty-six million, two hundred fifty-six thousand, seven hundred seventeen".