13185001663 has 2 divisors, whose sum is σ = 13185001664. Its totient is φ = 13185001662.

The previous prime is 13185001631. The next prime is 13185001673. The reversal of 13185001663 is 36610058131.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 13185001663 - 2⁵ = 13185001631 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13185001673) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6592500831 + 6592500832.

It is an arithmetic number, because the mean of its divisors is an integer number (6592500832).

Almost surely, 2^13185001663 is an apocalyptic number.

13185001663 is a deficient number, since it is larger than the sum of its proper divisors (1).

13185001663 is an equidigital number, since it uses as much as digits as its factorization.

13185001663 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12960, while the sum is 34.

Adding to 13185001663 its reverse (36610058131), we get a palindrome (49795059794).

The spelling of 13185001663 in words is "thirteen billion, one hundred eighty-five million, one thousand, six hundred sixty-three".