2666996653 has 2 divisors, whose sum is σ = 2666996654. Its totient is φ = 2666996652.

The previous prime is 2666996641. The next prime is 2666996711. The reversal of 2666996653 is 3566996662.

It is an a-pointer prime, because the next prime (2666996711) can be obtained adding 2666996653 to its sum of digits (58).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2666896164 + 100489 = 51642^2 + 317^2 .

It is a cyclic number.

It is not a de Polignac number, because 2666996653 - 2¹⁷ = 2666865581 is a prime.

It is a super-2 number, since 2×2666996653² = 14225742294226404818, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2666996953) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1333498326 + 1333498327.

It is an arithmetic number, because the mean of its divisors is an integer number (1333498327).

Almost surely, 2^2666996653 is an apocalyptic number.

It is an amenable number.

2666996653 is a deficient number, since it is larger than the sum of its proper divisors (1).

2666996653 is an equidigital number, since it uses as much as digits as its factorization.

2666996653 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18895680, while the sum is 58.

The square root of 2666996653 is about 51642.9729295284. The cubic root of 2666996653 is about 1386.7797462782.

Subtracting 2666996653 from its reverse (3566996662), we obtain a palindrome (900000009).

The spelling of 2666996653 in words is "two billion, six hundred sixty-six million, nine hundred ninety-six thousand, six hundred fifty-three".