2666330551 has 2 divisors, whose sum is σ = 2666330552. Its totient is φ = 2666330550.

The previous prime is 2666330549. The next prime is 2666330561. The reversal of 2666330551 is 1550336662.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2666330551 - 2¹ = 2666330549 is a prime.

Together with 2666330549, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 2666330551.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2666330561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1333165275 + 1333165276.

It is an arithmetic number, because the mean of its divisors is an integer number (1333165276).

Almost surely, 2^2666330551 is an apocalyptic number.

2666330551 is a deficient number, since it is larger than the sum of its proper divisors (1).

2666330551 is an equidigital number, since it uses as much as digits as its factorization.

2666330551 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 97200, while the sum is 37.

The square root of 2666330551 is about 51636.5234209276. The cubic root of 2666330551 is about 1386.6642838565.

The spelling of 2666330551 in words is "two billion, six hundred sixty-six million, three hundred thirty thousand, five hundred fifty-one".