66100050053503 has 2 divisors, whose sum is σ = 66100050053504. Its totient is φ = 66100050053502.

The previous prime is 66100050053489. The next prime is 66100050053533. The reversal of 66100050053503 is 30535005000166.

66100050053503 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-66100050053503 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66100050053533) 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, 33050025026751 + 33050025026752.

It is an arithmetic number, because the mean of its divisors is an integer number (33050025026752).

Almost surely, 2^{66100050053503} is an apocalyptic number.

66100050053503 is a deficient number, since it is larger than the sum of its proper divisors (1).

66100050053503 is an equidigital number, since it uses as much as digits as its factorization.

66100050053503 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 40500, while the sum is 34.

Adding to 66100050053503 its reverse (30535005000166), we get a palindrome (96635055053669).

The spelling of 66100050053503 in words is "sixty-six trillion, one hundred billion, fifty million, fifty-three thousand, five hundred three".