30436767661 has 2 divisors, whose sum is σ = 30436767662. Its totient is φ = 30436767660.

The previous prime is 30436767631. The next prime is 30436767703. The reversal of 30436767661 is 16676763403.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18135739561 + 12301028100 = 134669^2 + 110910^2 .

It is a cyclic number.

It is not a de Polignac number, because 30436767661 - 2⁹ = 30436767149 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30436767611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15218383830 + 15218383831.

It is an arithmetic number, because the mean of its divisors is an integer number (15218383831).

Almost surely, 2^30436767661 is an apocalyptic number.

It is an amenable number.

30436767661 is a deficient number, since it is larger than the sum of its proper divisors (1).

30436767661 is an equidigital number, since it uses as much as digits as its factorization.

30436767661 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2286144, while the sum is 49.

The spelling of 30436767661 in words is "thirty billion, four hundred thirty-six million, seven hundred sixty-seven thousand, six hundred sixty-one".