30640104893161 has 2 divisors, whose sum is σ = 30640104893162. Its totient is φ = 30640104893160.

The previous prime is 30640104893159. The next prime is 30640104893213. The reversal of 30640104893161 is 16139840104603.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 25912172160000 + 4727932733161 = 5090400^2 + 2174381^2 .

It is a cyclic number.

It is not a de Polignac number, because 30640104893161 - 2¹ = 30640104893159 is a prime.

Together with 30640104893159, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (30640104893261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15320052446580 + 15320052446581.

It is an arithmetic number, because the mean of its divisors is an integer number (15320052446581).

Almost surely, 2^{30640104893161} is an apocalyptic number.

It is an amenable number.

30640104893161 is a deficient number, since it is larger than the sum of its proper divisors (1).

30640104893161 is an equidigital number, since it uses as much as digits as its factorization.

30640104893161 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 373248, while the sum is 46.

Adding to 30640104893161 its reverse (16139840104603), we get a palindrome (46779944997764).

The spelling of 30640104893161 in words is "thirty trillion, six hundred forty billion, one hundred four million, eight hundred ninety-three thousand, one hundred sixty-one".