30726039420161 has 2 divisors, whose sum is σ = 30726039420162. Its totient is φ = 30726039420160.

The previous prime is 30726039420107. The next prime is 30726039420187. The reversal of 30726039420161 is 16102493062703.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 25401801600400 + 5324237819761 = 5040020^2 + 2307431^2 .

It is an emirp because it is prime and its reverse (16102493062703) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30726039420161 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (30726039420961) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15363019710080 + 15363019710081.

It is an arithmetic number, because the mean of its divisors is an integer number (15363019710081).

Almost surely, 2^{30726039420161} is an apocalyptic number.

It is an amenable number.

30726039420161 is a deficient number, since it is larger than the sum of its proper divisors (1).

30726039420161 is an equidigital number, since it uses as much as digits as its factorization.

30726039420161 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 326592, while the sum is 44.

The spelling of 30726039420161 in words is "thirty trillion, seven hundred twenty-six billion, thirty-nine million, four hundred twenty thousand, one hundred sixty-one".