2011266623 has 2 divisors, whose sum is σ = 2011266624. Its totient is φ = 2011266622.

The previous prime is 2011266611. The next prime is 2011266643. The reversal of 2011266623 is 3266621102.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2011266623 - 2²⁶ = 1944157759 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2011266643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1005633311 + 1005633312.

It is an arithmetic number, because the mean of its divisors is an integer number (1005633312).

Almost surely, 2^2011266623 is an apocalyptic number.

2011266623 is a deficient number, since it is larger than the sum of its proper divisors (1).

2011266623 is an equidigital number, since it uses as much as digits as its factorization.

2011266623 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5184, while the sum is 29.

The square root of 2011266623 is about 44847.1473228789. The cubic root of 2011266623 is about 1262.2824638166.

Adding to 2011266623 its reverse (3266621102), we get a palindrome (5277887725).

The spelling of 2011266623 in words is "two billion, eleven million, two hundred sixty-six thousand, six hundred twenty-three".