2165381585395 has 16 divisors (see below), whose sum is σ = 2969821183680. Its totient is φ = 1484755582464.

The previous prime is 2165381585371. The next prime is 2165381585407. The reversal of 2165381585395 is 5935851835612.

It is not a de Polignac number, because 2165381585395 - 2⁵ = 2165381585363 is a prime.

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, 930490 + ... + 2279599.

It is an arithmetic number, because the mean of its divisors is an integer number (185613823980).

Almost surely, 2^{2165381585395} is an apocalyptic number.

2165381585395 is a deficient number, since it is larger than the sum of its proper divisors (804439598285).

2165381585395 is a wasteful number, since it uses less digits than its factorization.

2165381585395 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3229374.

The product of its digits is 38880000, while the sum is 61.

The spelling of 2165381585395 in words is "two trillion, one hundred sixty-five billion, three hundred eighty-one million, five hundred eighty-five thousand, three hundred ninety-five".