66676173043 has 4 divisors (see below), whose sum is σ = 68302421208. Its totient is φ = 65049924880.

The previous prime is 66676173017. The next prime is 66676173071. The reversal of 66676173043 is 34037167666.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 66676173043 - 2⁹ = 66676172531 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66676173143) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 813124021 + ... + 813124102.

It is an arithmetic number, because the mean of its divisors is an integer number (17075605302).

Almost surely, 2^66676173043 is an apocalyptic number.

66676173043 is a deficient number, since it is larger than the sum of its proper divisors (1626248165).

66676173043 is a wasteful number, since it uses less digits than its factorization.

66676173043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1626248164.

The product of its (nonzero) digits is 2286144, while the sum is 49.

The spelling of 66676173043 in words is "sixty-six billion, six hundred seventy-six million, one hundred seventy-three thousand, forty-three".