66733403671 has 8 divisors (see below), whose sum is σ = 75148466688. Its totient is φ = 58709739000.

The previous prime is 66733403591. The next prime is 66733403687. The reversal of 66733403671 is 17630433766.

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

It is not a de Polignac number, because 66733403671 - 2⁹ = 66733403159 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66733403071) 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, 97849225 + ... + 97849906.

It is an arithmetic number, because the mean of its divisors is an integer number (9393558336).

Almost surely, 2^66733403671 is an apocalyptic number.

66733403671 is a deficient number, since it is larger than the sum of its proper divisors (8415063017).

66733403671 is a wasteful number, since it uses less digits than its factorization.

66733403671 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 195699173.

The product of its (nonzero) digits is 1143072, while the sum is 46.

The spelling of 66733403671 in words is "sixty-six billion, seven hundred thirty-three million, four hundred three thousand, six hundred seventy-one".