254636434057 has 2 divisors, whose sum is σ = 254636434058. Its totient is φ = 254636434056.

The previous prime is 254636434051. The next prime is 254636434099. The reversal of 254636434057 is 750434636452.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 246575806096 + 8060627961 = 496564^2 + 89781^2 .

It is a cyclic number.

It is not a de Polignac number, because 254636434057 - 2³ = 254636434049 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 254636434057.

It is not a weakly prime, because it can be changed into another prime (254636434051) 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, 127318217028 + 127318217029.

It is an arithmetic number, because the mean of its divisors is an integer number (127318217029).

Almost surely, 2^254636434057 is an apocalyptic number.

It is an amenable number.

254636434057 is a deficient number, since it is larger than the sum of its proper divisors (1).

254636434057 is an equidigital number, since it uses as much as digits as its factorization.

254636434057 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7257600, while the sum is 49.

The spelling of 254636434057 in words is "two hundred fifty-four billion, six hundred thirty-six million, four hundred thirty-four thousand, fifty-seven".