254111166109 has 2 divisors, whose sum is σ = 254111166110. Its totient is φ = 254111166108.

The previous prime is 254111166097. The next prime is 254111166143. The reversal of 254111166109 is 901661111452.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 165677491225 + 88433674884 = 407035^2 + 297378^2 .

It is a cyclic number.

It is not a de Polignac number, because 254111166109 - 2⁷ = 254111165981 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (254111166149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127055583054 + 127055583055.

It is an arithmetic number, because the mean of its divisors is an integer number (127055583055).

Almost surely, 2^254111166109 is an apocalyptic number.

It is an amenable number.

254111166109 is a deficient number, since it is larger than the sum of its proper divisors (1).

254111166109 is an equidigital number, since it uses as much as digits as its factorization.

254111166109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12960, while the sum is 37.

The spelling of 254111166109 in words is "two hundred fifty-four billion, one hundred eleven million, one hundred sixty-six thousand, one hundred nine".