355522344522991 has 2 divisors, whose sum is σ = 355522344522992. Its totient is φ = 355522344522990.

The previous prime is 355522344522973. The next prime is 355522344523043. The reversal of 355522344522991 is 199225443225553.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (199225443225553) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 355522344522991 - 2¹⁵ = 355522344490223 is a prime.

It is a super-2 number, since 2×355522344522991² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (355522344522941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 177761172261495 + 177761172261496.

It is an arithmetic number, because the mean of its divisors is an integer number (177761172261496).

Almost surely, 2^{355522344522991} is an apocalyptic number.

355522344522991 is a deficient number, since it is larger than the sum of its proper divisors (1).

355522344522991 is an equidigital number, since it uses as much as digits as its factorization.

355522344522991 is an evil number, because the sum of its binary digits is even.

The product of its digits is 116640000, while the sum is 61.

The spelling of 355522344522991 in words is "three hundred fifty-five trillion, five hundred twenty-two billion, three hundred forty-four million, five hundred twenty-two thousand, nine hundred ninety-one".