66036235253 has 4 divisors (see below), whose sum is σ = 66171833760. Its totient is φ = 65900636748.

The previous prime is 66036235201. The next prime is 66036235267. The reversal of 66036235253 is 35253263066.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 66036235253 - 2⁶ = 66036235189 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 66036235253.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66036235273) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 67798523 + ... + 67799496.

It is an arithmetic number, because the mean of its divisors is an integer number (16542958440).

Almost surely, 2^66036235253 is an apocalyptic number.

It is an amenable number.

66036235253 is a deficient number, since it is larger than the sum of its proper divisors (135598507).

66036235253 is a wasteful number, since it uses less digits than its factorization.

66036235253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135598506.

The product of its (nonzero) digits is 583200, while the sum is 41.

The spelling of 66036235253 in words is "sixty-six billion, thirty-six million, two hundred thirty-five thousand, two hundred fifty-three".