2165645635703 has 8 divisors (see below), whose sum is σ = 2362940060160. Its totient is φ = 1968420802680.

The previous prime is 2165645635691. The next prime is 2165645635711. The reversal of 2165645635703 is 3075365465612.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2165645635703 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 (2165645635103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17332775 + ... + 17457272.

It is an arithmetic number, because the mean of its divisors is an integer number (295367507520).

Almost surely, 2^{2165645635703} is an apocalyptic number.

2165645635703 is a deficient number, since it is larger than the sum of its proper divisors (197294424457).

2165645635703 is a wasteful number, since it uses less digits than its factorization.

2165645635703 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34795717.

The product of its (nonzero) digits is 13608000, while the sum is 53.

The spelling of 2165645635703 in words is "two trillion, one hundred sixty-five billion, six hundred forty-five million, six hundred thirty-five thousand, seven hundred three".