2011266653 has 4 divisors (see below), whose sum is σ = 2194109088. Its totient is φ = 1828424220.

The previous prime is 2011266643. The next prime is 2011266661. The reversal of 2011266653 is 3566621102.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2011266653 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 (2011266623) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 91421201 + ... + 91421222.

It is an arithmetic number, because the mean of its divisors is an integer number (548527272).

Almost surely, 2^2011266653 is an apocalyptic number.

It is an amenable number.

2011266653 is a deficient number, since it is larger than the sum of its proper divisors (182842435).

2011266653 is a wasteful number, since it uses less digits than its factorization.

2011266653 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 182842434.

The product of its (nonzero) digits is 12960, while the sum is 32.

The square root of 2011266653 is about 44847.1476573483. The cubic root of 2011266653 is about 1262.2824700927.

Adding to 2011266653 its reverse (3566621102), we get a palindrome (5577887755).

The spelling of 2011266653 in words is "two billion, eleven million, two hundred sixty-six thousand, six hundred fifty-three".