255549948019 has 2 divisors, whose sum is σ = 255549948020. Its totient is φ = 255549948018.

The previous prime is 255549947963. The next prime is 255549948023. The reversal of 255549948019 is 910849945552.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 255549948019 - 2²¹ = 255547850867 is a prime.

It is a super-2 number, since 2×255549948019² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (255549948919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127774974009 + 127774974010.

It is an arithmetic number, because the mean of its divisors is an integer number (127774974010).

Almost surely, 2^255549948019 is an apocalyptic number.

255549948019 is a deficient number, since it is larger than the sum of its proper divisors (1).

255549948019 is an equidigital number, since it uses as much as digits as its factorization.

255549948019 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 23328000, while the sum is 61.

The spelling of 255549948019 in words is "two hundred fifty-five billion, five hundred forty-nine million, nine hundred forty-eight thousand, nineteen".