2168913526313 has 16 divisors (see below), whose sum is σ = 2250460496400. Its totient is φ = 2087822822400.

The previous prime is 2168913526301. The next prime is 2168913526379. The reversal of 2168913526313 is 3136253198612.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 74849846569 + 2094063679744 = 273587^2 + 1447088^2 .

It is a cyclic number.

It is not a de Polignac number, because 2168913526313 - 2³⁰ = 2167839784489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2168913526613) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21310895 + ... + 21412427.

It is an arithmetic number, because the mean of its divisors is an integer number (140653781025).

Almost surely, 2^{2168913526313} is an apocalyptic number.

It is an amenable number.

2168913526313 is a deficient number, since it is larger than the sum of its proper divisors (81546970087).

2168913526313 is a wasteful number, since it uses less digits than its factorization.

2168913526313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103772.

The product of its digits is 1399680, while the sum is 50.

The spelling of 2168913526313 in words is "two trillion, one hundred sixty-eight billion, nine hundred thirteen million, five hundred twenty-six thousand, three hundred thirteen".