254266213657 has 2 divisors, whose sum is σ = 254266213658. Its totient is φ = 254266213656.

The previous prime is 254266213651. The next prime is 254266213697. The reversal of 254266213657 is 756312662452.

254266213657 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 248662792921 + 5603420736 = 498661^2 + 74856^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-254266213657 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 254266213657.

It is not a weakly prime, because it can be changed into another prime (254266213651) 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, 127133106828 + 127133106829.

It is an arithmetic number, because the mean of its divisors is an integer number (127133106829).

Almost surely, 2^254266213657 is an apocalyptic number.

It is an amenable number.

254266213657 is a deficient number, since it is larger than the sum of its proper divisors (1).

254266213657 is an equidigital number, since it uses as much as digits as its factorization.

254266213657 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3628800, while the sum is 49.

The spelling of 254266213657 in words is "two hundred fifty-four billion, two hundred sixty-six million, two hundred thirteen thousand, six hundred fifty-seven".