2666775047 has 2 divisors, whose sum is σ = 2666775048. Its totient is φ = 2666775046.

The previous prime is 2666774959. The next prime is 2666775061. The reversal of 2666775047 is 7405776662.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2666775047 - 2¹⁶ = 2666709511 is a prime.

It is a super-2 number, since 2×2666775047² = 14223378302603704418, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2666774986 and 2666775004.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2666775847) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1333387523 + 1333387524.

It is an arithmetic number, because the mean of its divisors is an integer number (1333387524).

Almost surely, 2^2666775047 is an apocalyptic number.

2666775047 is a deficient number, since it is larger than the sum of its proper divisors (1).

2666775047 is an equidigital number, since it uses as much as digits as its factorization.

2666775047 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2963520, while the sum is 50.

The square root of 2666775047 is about 51640.8273268351. The cubic root of 2666775047 is about 1386.7413351283.

The spelling of 2666775047 in words is "two billion, six hundred sixty-six million, seven hundred seventy-five thousand, forty-seven".