2666905288051 has 2 divisors, whose sum is σ = 2666905288052. Its totient is φ = 2666905288050.

The previous prime is 2666905288039. The next prime is 2666905288087. The reversal of 2666905288051 is 1508825096662.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2666905288051 - 2⁹ = 2666905287539 is a prime.

It is a super-2 number, since 2×2666905288051² (a number of 26 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2666905288031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1333452644025 + 1333452644026.

It is an arithmetic number, because the mean of its divisors is an integer number (1333452644026).

Almost surely, 2^{2666905288051} is an apocalyptic number.

2666905288051 is a deficient number, since it is larger than the sum of its proper divisors (1).

2666905288051 is an equidigital number, since it uses as much as digits as its factorization.

2666905288051 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12441600, while the sum is 58.

The spelling of 2666905288051 in words is "two trillion, six hundred sixty-six billion, nine hundred five million, two hundred eighty-eight thousand, fifty-one".