255549061433 has 2 divisors, whose sum is σ = 255549061434. Its totient is φ = 255549061432.

The previous prime is 255549061399. The next prime is 255549061463. The reversal of 255549061433 is 334160945552.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 190782883369 + 64766178064 = 436787^2 + 254492^2 .

It is a cyclic number.

It is not a de Polignac number, because 255549061433 - 2⁸ = 255549061177 is a prime.

It is not a weakly prime, because it can be changed into another prime (255549061463) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127774530716 + 127774530717.

It is an arithmetic number, because the mean of its divisors is an integer number (127774530717).

Almost surely, 2^255549061433 is an apocalyptic number.

It is an amenable number.

255549061433 is a deficient number, since it is larger than the sum of its proper divisors (1).

255549061433 is an equidigital number, since it uses as much as digits as its factorization.

255549061433 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1944000, while the sum is 47.

The spelling of 255549061433 in words is "two hundred fifty-five billion, five hundred forty-nine million, sixty-one thousand, four hundred thirty-three".