254267518117 has 2 divisors, whose sum is σ = 254267518118. Its totient is φ = 254267518116.

The previous prime is 254267518049. The next prime is 254267518133. The reversal of 254267518117 is 711815762452.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 191142965601 + 63124552516 = 437199^2 + 251246^2 .

It is a cyclic number.

It is not a de Polignac number, because 254267518117 - 2⁷ = 254267517989 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (254267518157) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127133759058 + 127133759059.

It is an arithmetic number, because the mean of its divisors is an integer number (127133759059).

Almost surely, 2^254267518117 is an apocalyptic number.

It is an amenable number.

254267518117 is a deficient number, since it is larger than the sum of its proper divisors (1).

254267518117 is an equidigital number, since it uses as much as digits as its factorization.

254267518117 is an evil number, because the sum of its binary digits is even.

The product of its digits is 940800, while the sum is 49.

The spelling of 254267518117 in words is "two hundred fifty-four billion, two hundred sixty-seven million, five hundred eighteen thousand, one hundred seventeen".