66323252603633 has 8 divisors (see below), whose sum is σ = 66475434900000. Its totient is φ = 66171147388128.

The previous prime is 66323252603623. The next prime is 66323252603653. The reversal of 66323252603633 is 33630625232366.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 66323252603633 - 2¹⁶ = 66323252538097 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66323252603623) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17547191 + ... + 20989292.

It is an arithmetic number, because the mean of its divisors is an integer number (8309429362500).

Almost surely, 2^{66323252603633} is an apocalyptic number.

It is an amenable number.

66323252603633 is a deficient number, since it is larger than the sum of its proper divisors (152182296367).

66323252603633 is a wasteful number, since it uses less digits than its factorization.

66323252603633 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38540431.

The product of its (nonzero) digits is 12597120, while the sum is 50.

Adding to 66323252603633 its reverse (33630625232366), we get a palindrome (99953877835999).

The spelling of 66323252603633 in words is "sixty-six trillion, three hundred twenty-three billion, two hundred fifty-two million, six hundred three thousand, six hundred thirty-three".