254217246643 has 2 divisors, whose sum is σ = 254217246644. Its totient is φ = 254217246642.

The previous prime is 254217246623. The next prime is 254217246677. The reversal of 254217246643 is 346642712452.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-254217246643 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 254217246593 and 254217246602.

It is not a weakly prime, because it can be changed into another prime (254217246623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127108623321 + 127108623322.

It is an arithmetic number, because the mean of its divisors is an integer number (127108623322).

Almost surely, 2^254217246643 is an apocalyptic number.

254217246643 is a deficient number, since it is larger than the sum of its proper divisors (1).

254217246643 is an equidigital number, since it uses as much as digits as its factorization.

254217246643 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1935360, while the sum is 46.

The spelling of 254217246643 in words is "two hundred fifty-four billion, two hundred seventeen million, two hundred forty-six thousand, six hundred forty-three".