66345225404 has 12 divisors (see below), whose sum is σ = 116126711904. Its totient is φ = 33166164864.

The previous prime is 66345225403. The next prime is 66345225413. The reversal of 66345225404 is 40452254366.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66345225403) 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 in 3 ways as a sum of consecutive naturals, for example, 1588772 + ... + 1629995.

It is an arithmetic number, because the mean of its divisors is an integer number (9677225992).

Almost surely, 2^66345225404 is an apocalyptic number.

It is an amenable number.

66345225404 is a deficient number, since it is larger than the sum of its proper divisors (49781486500).

66345225404 is a wasteful number, since it uses less digits than its factorization.

66345225404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3223924 (or 3223922 counting only the distinct ones).

The product of its (nonzero) digits is 691200, while the sum is 41.

The spelling of 66345225404 in words is "sixty-six billion, three hundred forty-five million, two hundred twenty-five thousand, four hundred four".