2165244304613 has 12 divisors (see below), whose sum is σ = 2344779994788. Its totient is φ = 1998545253120.

The previous prime is 2165244304607. The next prime is 2165244304627. The reversal of 2165244304613 is 3164034425612.

It can be written as a sum of positive squares in 6 ways, for example, as 800268008929 + 1364976295684 = 894577^2 + 1168322^2 .

It is not a de Polignac number, because 2165244304613 - 2⁶ = 2165244304549 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 (2165244304513) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1972931 + ... + 2867567.

It is an arithmetic number, because the mean of its divisors is an integer number (195398332899).

Almost surely, 2^{2165244304613} is an apocalyptic number.

It is an amenable number.

2165244304613 is a deficient number, since it is larger than the sum of its proper divisors (179535690175).

2165244304613 is a wasteful number, since it uses less digits than its factorization.

2165244304613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 908984 (or 908971 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 41.

The spelling of 2165244304613 in words is "two trillion, one hundred sixty-five billion, two hundred forty-four million, three hundred four thousand, six hundred thirteen".