66267201646 has 8 divisors (see below), whose sum is σ = 102607280064. Its totient is φ = 32064774960.

The previous prime is 66267201629. The next prime is 66267201661. The reversal of 66267201646 is 64610276266.

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

It is a junction number, because it is equal to n+sod(n) for n = 66267201596 and 66267201605.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 534412855 + ... + 534412978.

It is an arithmetic number, because the mean of its divisors is an integer number (12825910008).

Almost surely, 2^66267201646 is an apocalyptic number.

66267201646 is a deficient number, since it is larger than the sum of its proper divisors (36340078418).

66267201646 is a wasteful number, since it uses less digits than its factorization.

66267201646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1068825866.

The product of its (nonzero) digits is 870912, while the sum is 46.

The spelling of 66267201646 in words is "sixty-six billion, two hundred sixty-seven million, two hundred one thousand, six hundred forty-six".