17995233646057 has 2 divisors, whose sum is σ = 17995233646058. Its totient is φ = 17995233646056.

The previous prime is 17995233645989. The next prime is 17995233646111. The reversal of 17995233646057 is 75064633259971.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9751105400976 + 8244128245081 = 3122676^2 + 2871259^2 .

It is an emirp because it is prime and its reverse (75064633259971) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-17995233646057 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 17995233645983 and 17995233646001.

It is not a weakly prime, because it can be changed into another prime (17995233646157) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8997616823028 + 8997616823029.

It is an arithmetic number, because the mean of its divisors is an integer number (8997616823029).

Almost surely, 2^{17995233646057} is an apocalyptic number.

It is an amenable number.

17995233646057 is a deficient number, since it is larger than the sum of its proper divisors (1).

17995233646057 is an equidigital number, since it uses as much as digits as its factorization.

17995233646057 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 257191200, while the sum is 67.

The spelling of 17995233646057 in words is "seventeen trillion, nine hundred ninety-five billion, two hundred thirty-three million, six hundred forty-six thousand, fifty-seven".