2165731702223 has 4 divisors (see below), whose sum is σ = 2165994446328. Its totient is φ = 2165468958120.

The previous prime is 2165731702219. The next prime is 2165731702249. The reversal of 2165731702223 is 3222071375612.

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 2165731702223 - 2² = 2165731702219 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 (2165734702223) 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, 131359688 + ... + 131376173.

It is an arithmetic number, because the mean of its divisors is an integer number (541498611582).

Almost surely, 2^{2165731702223} is an apocalyptic number.

2165731702223 is a deficient number, since it is larger than the sum of its proper divisors (262744105).

2165731702223 is an equidigital number, since it uses as much as digits as its factorization.

2165731702223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 262744104.

The product of its (nonzero) digits is 211680, while the sum is 41.

The spelling of 2165731702223 in words is "two trillion, one hundred sixty-five billion, seven hundred thirty-one million, seven hundred two thousand, two hundred twenty-three".