2566211116653 has 48 divisors (see below), whose sum is σ = 3836831072256. Its totient is φ = 1651079216160.

The previous prime is 2566211116633. The next prime is 2566211116661. The reversal of 2566211116653 is 3566111126652.

2566211116653 is a `hidden beast` number, since 2 + 5 + 6 + 621 + 1 + 1 + 16 + 6 + 5 + 3 = 666.

It is not a de Polignac number, because 2566211116653 - 2²⁹ = 2565674245741 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2566211116599 and 2566211116608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2566211116603) 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 47 ways as a sum of consecutive naturals, for example, 159117076 + ... + 159133202.

It is an arithmetic number, because the mean of its divisors is an integer number (79933980672).

Almost surely, 2^{2566211116653} is an apocalyptic number.

It is an amenable number.

2566211116653 is a deficient number, since it is larger than the sum of its proper divisors (1270619955603).

2566211116653 is a wasteful number, since it uses less digits than its factorization.

2566211116653 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17694 (or 17691 counting only the distinct ones).

The product of its digits is 388800, while the sum is 45.

Subtracting 2566211116653 from its reverse (3566111126652), we obtain a palindrome (999900009999).

The spelling of 2566211116653 in words is "two trillion, five hundred sixty-six billion, two hundred eleven million, one hundred sixteen thousand, six hundred fifty-three".