18503702035009 has 2 divisors, whose sum is σ = 18503702035010. Its totient is φ = 18503702035008.

The previous prime is 18503702034959. The next prime is 18503702035033. The reversal of 18503702035009 is 90053020730581.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17517112769025 + 986589265984 = 4185345^2 + 993272^2 .

It is an emirp because it is prime and its reverse (90053020730581) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18503702035009 is a prime.

It is a super-4 number, since 4×18503702035009⁴ (a number of 54 digits) contains 4444 as substring.

It is not a weakly prime, because it can be changed into another prime (18503702035409) 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, 9251851017504 + 9251851017505.

It is an arithmetic number, because the mean of its divisors is an integer number (9251851017505).

Almost surely, 2^{18503702035009} is an apocalyptic number.

It is an amenable number.

18503702035009 is a deficient number, since it is larger than the sum of its proper divisors (1).

18503702035009 is an equidigital number, since it uses as much as digits as its factorization.

18503702035009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 226800, while the sum is 43.

The spelling of 18503702035009 in words is "eighteen trillion, five hundred three billion, seven hundred two million, thirty-five thousand, nine".