30000689427661 has 2 divisors, whose sum is σ = 30000689427662. Its totient is φ = 30000689427660.

The previous prime is 30000689427629. The next prime is 30000689427757. The reversal of 30000689427661 is 16672498600003.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19918984898761 + 10081704528900 = 4463069^2 + 3175170^2 .

It is a cyclic number.

It is not a de Polignac number, because 30000689427661 - 2⁵ = 30000689427629 is a prime.

It is a super-2 number, since 2×30000689427661² (a number of 28 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 30000689427599 and 30000689427608.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30000689424661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15000344713830 + 15000344713831.

It is an arithmetic number, because the mean of its divisors is an integer number (15000344713831).

Almost surely, 2^{30000689427661} is an apocalyptic number.

It is an amenable number.

30000689427661 is a deficient number, since it is larger than the sum of its proper divisors (1).

30000689427661 is an equidigital number, since it uses as much as digits as its factorization.

30000689427661 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2612736, while the sum is 52.

The spelling of 30000689427661 in words is "thirty trillion, six hundred eighty-nine million, four hundred twenty-seven thousand, six hundred sixty-one".