2666520133 has 2 divisors, whose sum is σ = 2666520134. Its totient is φ = 2666520132.

The previous prime is 2666520119. The next prime is 2666520161. The reversal of 2666520133 is 3310256662.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1474406404 + 1192113729 = 38398^2 + 34527^2 .

It is a cyclic number.

It is not a de Polignac number, because 2666520133 - 2¹³ = 2666511941 is a prime.

It is a super-2 number, since 2×2666520133² = 14220659239388675378, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2666523133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1333260066 + 1333260067.

It is an arithmetic number, because the mean of its divisors is an integer number (1333260067).

Almost surely, 2^2666520133 is an apocalyptic number.

It is an amenable number.

2666520133 is a deficient number, since it is larger than the sum of its proper divisors (1).

2666520133 is an equidigital number, since it uses as much as digits as its factorization.

2666520133 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 38880, while the sum is 34.

The square root of 2666520133 is about 51638.3591238141. The cubic root of 2666520133 is about 1386.6971480435.

Adding to 2666520133 its reverse (3310256662), we get a palindrome (5976776795).

The spelling of 2666520133 in words is "two billion, six hundred sixty-six million, five hundred twenty thousand, one hundred thirty-three".