66611050671 has 12 divisors (see below), whose sum is σ = 97622807576. Its totient is φ = 40370333520.

The previous prime is 66611050663. The next prime is 66611050699. The reversal of 66611050671 is 17605011666.

It is not a de Polignac number, because 66611050671 - 2³ = 66611050663 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 (66611050601) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 91750396 + ... + 91751121.

Almost surely, 2^66611050671 is an apocalyptic number.

66611050671 is a deficient number, since it is larger than the sum of its proper divisors (31011756905).

66611050671 is a wasteful number, since it uses less digits than its factorization.

66611050671 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 183501542 (or 183501531 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 39.

The spelling of 66611050671 in words is "sixty-six billion, six hundred eleven million, fifty thousand, six hundred seventy-one".