2666100251 has 2 divisors, whose sum is σ = 2666100252. Its totient is φ = 2666100250.

The previous prime is 2666100167. The next prime is 2666100257. The reversal of 2666100251 is 1520016662.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2666100251 is a prime.

It is not a weakly prime, because it can be changed into another prime (2666100257) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1333050125 + 1333050126.

It is an arithmetic number, because the mean of its divisors is an integer number (1333050126).

Almost surely, 2^2666100251 is an apocalyptic number.

2666100251 is a deficient number, since it is larger than the sum of its proper divisors (1).

2666100251 is an equidigital number, since it uses as much as digits as its factorization.

2666100251 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 2666100251 is about 51634.2933620670. The cubic root of 2666100251 is about 1386.6243590768.

The spelling of 2666100251 in words is "two billion, six hundred sixty-six million, one hundred thousand, two hundred fifty-one".