30166445081 has 2 divisors, whose sum is σ = 30166445082. Its totient is φ = 30166445080.

The previous prime is 30166445017. The next prime is 30166445129. The reversal of 30166445081 is 18054466103.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 30157795600 + 8649481 = 173660^2 + 2941^2 .

It is a cyclic number.

It is not a de Polignac number, because 30166445081 - 2⁶ = 30166445017 is a prime.

It is a super-2 number, since 2×30166445081² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (30166435081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15083222540 + 15083222541.

It is an arithmetic number, because the mean of its divisors is an integer number (15083222541).

Almost surely, 2^30166445081 is an apocalyptic number.

It is an amenable number.

30166445081 is a deficient number, since it is larger than the sum of its proper divisors (1).

30166445081 is an equidigital number, since it uses as much as digits as its factorization.

30166445081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 69120, while the sum is 38.

The spelling of 30166445081 in words is "thirty billion, one hundred sixty-six million, four hundred forty-five thousand, eighty-one".