66268219643 has 8 divisors (see below), whose sum is σ = 69507738528. Its totient is φ = 63058558464.

The previous prime is 66268219621. The next prime is 66268219657. The reversal of 66268219643 is 34691286266.

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 66268219643 - 2⁸ = 66268219387 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66268219613) 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 7 ways as a sum of consecutive naturals, for example, 7459880 + ... + 7468757.

It is an arithmetic number, because the mean of its divisors is an integer number (8688467316).

Almost surely, 2^66268219643 is an apocalyptic number.

66268219643 is a deficient number, since it is larger than the sum of its proper divisors (3239518885).

66268219643 is a wasteful number, since it uses less digits than its factorization.

66268219643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14928853.

The product of its digits is 4478976, while the sum is 53.

The spelling of 66268219643 in words is "sixty-six billion, two hundred sixty-eight million, two hundred nineteen thousand, six hundred forty-three".