255545121407 has 2 divisors, whose sum is σ = 255545121408. Its totient is φ = 255545121406.

The previous prime is 255545121397. The next prime is 255545121457. The reversal of 255545121407 is 704121545552.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 255545121407 - 2⁶ = 255545121343 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (255545121457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127772560703 + 127772560704.

It is an arithmetic number, because the mean of its divisors is an integer number (127772560704).

Almost surely, 2^255545121407 is an apocalyptic number.

255545121407 is a deficient number, since it is larger than the sum of its proper divisors (1).

255545121407 is an equidigital number, since it uses as much as digits as its factorization.

255545121407 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 280000, while the sum is 41.

Adding to 255545121407 its reverse (704121545552), we get a palindrome (959666666959).

The spelling of 255545121407 in words is "two hundred fifty-five billion, five hundred forty-five million, one hundred twenty-one thousand, four hundred seven".