17996736618853 has 2 divisors, whose sum is σ = 17996736618854. Its totient is φ = 17996736618852.

The previous prime is 17996736618769. The next prime is 17996736618911. The reversal of 17996736618853 is 35881663769971.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17295226515009 + 701510103844 = 4158753^2 + 837562^2 .

It is an emirp because it is prime and its reverse (35881663769971) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-17996736618853 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (17996736118853) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8998368309426 + 8998368309427.

It is an arithmetic number, because the mean of its divisors is an integer number (8998368309427).

Almost surely, 2^{17996736618853} is an apocalyptic number.

It is an amenable number.

17996736618853 is a deficient number, since it is larger than the sum of its proper divisors (1).

17996736618853 is an equidigital number, since it uses as much as digits as its factorization.

17996736618853 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2469035520, while the sum is 79.

The spelling of 17996736618853 in words is "seventeen trillion, nine hundred ninety-six billion, seven hundred thirty-six million, six hundred eighteen thousand, eight hundred fifty-three".