254333042454991 has 2 divisors, whose sum is σ = 254333042454992. Its totient is φ = 254333042454990.

The previous prime is 254333042454983. The next prime is 254333042455031. The reversal of 254333042454991 is 199454240333452.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 254333042454991 - 2³ = 254333042454983 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (254333042454941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127166521227495 + 127166521227496.

It is an arithmetic number, because the mean of its divisors is an integer number (127166521227496).

Almost surely, 2^{254333042454991} is an apocalyptic number.

254333042454991 is a deficient number, since it is larger than the sum of its proper divisors (1).

254333042454991 is an equidigital number, since it uses as much as digits as its factorization.

254333042454991 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 55987200, while the sum is 58.

The spelling of 254333042454991 in words is "two hundred fifty-four trillion, three hundred thirty-three billion, forty-two million, four hundred fifty-four thousand, nine hundred ninety-one".