30057632681 has 2 divisors, whose sum is σ = 30057632682. Its totient is φ = 30057632680.

The previous prime is 30057632651. The next prime is 30057632707. The reversal of 30057632681 is 18623675003.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17976105625 + 12081527056 = 134075^2 + 109916^2 .

It is a cyclic number.

It is not a de Polignac number, because 30057632681 - 2³⁰ = 28983890857 is a prime.

It is a super-2 number, since 2×30057632681² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (30057632621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15028816340 + 15028816341.

It is an arithmetic number, because the mean of its divisors is an integer number (15028816341).

Almost surely, 2^30057632681 is an apocalyptic number.

It is an amenable number.

30057632681 is a deficient number, since it is larger than the sum of its proper divisors (1).

30057632681 is an equidigital number, since it uses as much as digits as its factorization.

30057632681 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 181440, while the sum is 41.

The spelling of 30057632681 in words is "thirty billion, fifty-seven million, six hundred thirty-two thousand, six hundred eighty-one".