322747661081 has 2 divisors, whose sum is σ = 322747661082. Its totient is φ = 322747661080.

The previous prime is 322747661077. The next prime is 322747661113. The reversal of 322747661081 is 180166747223.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 300342361225 + 22405299856 = 548035^2 + 149684^2 .

It is a cyclic number.

It is not a de Polignac number, because 322747661081 - 2² = 322747661077 is a prime.

It is a super-2 number, since 2×322747661081² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (322747661051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 161373830540 + 161373830541.

It is an arithmetic number, because the mean of its divisors is an integer number (161373830541).

Almost surely, 2^322747661081 is an apocalyptic number.

It is an amenable number.

322747661081 is a deficient number, since it is larger than the sum of its proper divisors (1).

322747661081 is an equidigital number, since it uses as much as digits as its factorization.

322747661081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 677376, while the sum is 47.

The spelling of 322747661081 in words is "three hundred twenty-two billion, seven hundred forty-seven million, six hundred sixty-one thousand, eighty-one".