255603342061 has 2 divisors, whose sum is σ = 255603342062. Its totient is φ = 255603342060.

The previous prime is 255603342037. The next prime is 255603342073. The reversal of 255603342061 is 160243306552.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 251246550025 + 4356792036 = 501245^2 + 66006^2 .

It is a cyclic number.

It is not a de Polignac number, because 255603342061 - 2⁷ = 255603341933 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 255603342061.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (255603342011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127801671030 + 127801671031.

It is an arithmetic number, because the mean of its divisors is an integer number (127801671031).

Almost surely, 2^255603342061 is an apocalyptic number.

It is an amenable number.

255603342061 is a deficient number, since it is larger than the sum of its proper divisors (1).

255603342061 is an equidigital number, since it uses as much as digits as its factorization.

255603342061 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 129600, while the sum is 37.

The spelling of 255603342061 in words is "two hundred fifty-five billion, six hundred three million, three hundred forty-two thousand, sixty-one".