66850610671 has 8 divisors (see below), whose sum is σ = 76227845904. Its totient is φ = 58078358400.

The previous prime is 66850610663. The next prime is 66850610719. The reversal of 66850610671 is 17601605866.

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 66850610671 - 2³ = 66850610663 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 (66850610171) 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, 151245505 + ... + 151245946.

It is an arithmetic number, because the mean of its divisors is an integer number (9528480738).

Almost surely, 2^66850610671 is an apocalyptic number.

66850610671 is a deficient number, since it is larger than the sum of its proper divisors (9377235233).

66850610671 is a wasteful number, since it uses less digits than its factorization.

66850610671 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 302491481.

The product of its (nonzero) digits is 362880, while the sum is 46.

The spelling of 66850610671 in words is "sixty-six billion, eight hundred fifty million, six hundred ten thousand, six hundred seventy-one".