2165713208735 has 16 divisors (see below), whose sum is σ = 2600246031552. Its totient is φ = 1731644006400.

The previous prime is 2165713208719. The next prime is 2165713208797. The reversal of 2165713208735 is 5378023175612.

It is not a de Polignac number, because 2165713208735 - 2⁴ = 2165713208719 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 153796895 + ... + 153810975.

It is an arithmetic number, because the mean of its divisors is an integer number (162515376972).

Almost surely, 2^{2165713208735} is an apocalyptic number.

2165713208735 is a deficient number, since it is larger than the sum of its proper divisors (434532822817).

2165713208735 is a wasteful number, since it uses less digits than its factorization.

2165713208735 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28354.

The product of its (nonzero) digits is 2116800, while the sum is 50.

The spelling of 2165713208735 in words is "two trillion, one hundred sixty-five billion, seven hundred thirteen million, two hundred eight thousand, seven hundred thirty-five".