66736700033623 has 2 divisors, whose sum is σ = 66736700033624. Its totient is φ = 66736700033622.

The previous prime is 66736700033561. The next prime is 66736700033797. The reversal of 66736700033623 is 32633000763766.

66736700033623 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 not a de Polignac number, because 66736700033623 - 2⁹ = 66736700033111 is a prime.

It is a super-2 number, since 2×66736700033623² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66736700034623) 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, 33368350016811 + 33368350016812.

It is an arithmetic number, because the mean of its divisors is an integer number (33368350016812).

Almost surely, 2^{66736700033623} is an apocalyptic number.

66736700033623 is a deficient number, since it is larger than the sum of its proper divisors (1).

66736700033623 is an equidigital number, since it uses as much as digits as its factorization.

66736700033623 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10287648, while the sum is 52.

The spelling of 66736700033623 in words is "sixty-six trillion, seven hundred thirty-six billion, seven hundred million, thirty-three thousand, six hundred twenty-three".