254240167646657 has 2 divisors, whose sum is σ = 254240167646658. Its totient is φ = 254240167646656.

The previous prime is 254240167646639. The next prime is 254240167646681. The reversal of 254240167646657 is 756646761042452.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 254116628753296 + 123538893361 = 15941036^2 + 351481^2 .

It is a cyclic number.

It is not a de Polignac number, because 254240167646657 - 2⁶ = 254240167646593 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 254240167646593 and 254240167646602.

It is not a weakly prime, because it can be changed into another prime (254240167648657) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127120083823328 + 127120083823329.

It is an arithmetic number, because the mean of its divisors is an integer number (127120083823329).

Almost surely, 2^{254240167646657} is an apocalyptic number.

It is an amenable number.

254240167646657 is a deficient number, since it is larger than the sum of its proper divisors (1).

254240167646657 is an equidigital number, since it uses as much as digits as its factorization.

254240167646657 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 406425600, while the sum is 65.

The spelling of 254240167646657 in words is "two hundred fifty-four trillion, two hundred forty billion, one hundred sixty-seven million, six hundred forty-six thousand, six hundred fifty-seven".