66404672523233 has 24 divisors (see below), whose sum is σ = 77286536552736. Its totient is φ = 56814823640960.

The previous prime is 66404672523227. The next prime is 66404672523253. The reversal of 66404672523233 is 33232527640466.

It is not a de Polignac number, because 66404672523233 - 2⁶ = 66404672523169 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66404672523253) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 59152466 + ... + 60264612.

It is an arithmetic number, because the mean of its divisors is an integer number (3220272356364).

Almost surely, 2^{66404672523233} is an apocalyptic number.

It is an amenable number.

66404672523233 is a deficient number, since it is larger than the sum of its proper divisors (10881864029503).

66404672523233 is a wasteful number, since it uses less digits than its factorization.

66404672523233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1141213 (or 1141202 counting only the distinct ones).

The product of its (nonzero) digits is 26127360, while the sum is 53.

The spelling of 66404672523233 in words is "sixty-six trillion, four hundred four billion, six hundred seventy-two million, five hundred twenty-three thousand, two hundred thirty-three".