355500320261 has 2 divisors, whose sum is σ = 355500320262. Its totient is φ = 355500320260.

The previous prime is 355500320221. The next prime is 355500320281. The reversal of 355500320261 is 162023005553.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 251748045025 + 103752275236 = 501745^2 + 322106^2 .

It is a cyclic number.

It is not a de Polignac number, because 355500320261 - 2¹⁸ = 355500058117 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (355500320221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 177750160130 + 177750160131.

It is an arithmetic number, because the mean of its divisors is an integer number (177750160131).

Almost surely, 2^355500320261 is an apocalyptic number.

It is an amenable number.

355500320261 is a deficient number, since it is larger than the sum of its proper divisors (1).

355500320261 is an equidigital number, since it uses as much as digits as its factorization.

355500320261 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 27000, while the sum is 32.

The spelling of 355500320261 in words is "three hundred fifty-five billion, five hundred million, three hundred twenty thousand, two hundred sixty-one".