254331152542321 has 2 divisors, whose sum is σ = 254331152542322. Its totient is φ = 254331152542320.

The previous prime is 254331152542307. The next prime is 254331152542387. The reversal of 254331152542321 is 123245251133452.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 241262284064400 + 13068868477921 = 15532620^2 + 3615089^2 .

It is a cyclic number.

It is not a de Polignac number, because 254331152542321 - 2¹¹ = 254331152540273 is a prime.

It is not a weakly prime, because it can be changed into another prime (254331152546321) 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, 127165576271160 + 127165576271161.

It is an arithmetic number, because the mean of its divisors is an integer number (127165576271161).

Almost surely, 2^{254331152542321} is an apocalyptic number.

It is an amenable number.

254331152542321 is a deficient number, since it is larger than the sum of its proper divisors (1).

254331152542321 is an equidigital number, since it uses as much as digits as its factorization.

254331152542321 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 864000, while the sum is 43.

The spelling of 254331152542321 in words is "two hundred fifty-four trillion, three hundred thirty-one billion, one hundred fifty-two million, five hundred forty-two thousand, three hundred twenty-one".