30663052081 has 2 divisors, whose sum is σ = 30663052082. Its totient is φ = 30663052080.

The previous prime is 30663052039. The next prime is 30663052087. The reversal of 30663052081 is 18025036603.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 29178105856 + 1484946225 = 170816^2 + 38535^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30663052081 is a prime.

It is a super-2 number, since 2×30663052081² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (30663052087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15331526040 + 15331526041.

It is an arithmetic number, because the mean of its divisors is an integer number (15331526041).

Almost surely, 2^30663052081 is an apocalyptic number.

It is an amenable number.

30663052081 is a deficient number, since it is larger than the sum of its proper divisors (1).

30663052081 is an equidigital number, since it uses as much as digits as its factorization.

30663052081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 25920, while the sum is 34.

Adding to 30663052081 its reverse (18025036603), we get a palindrome (48688088684).

The spelling of 30663052081 in words is "thirty billion, six hundred sixty-three million, fifty-two thousand, eighty-one".