671166023605 has 16 divisors (see below), whose sum is σ = 1004134103424. Its totient is φ = 418389209280.

The previous prime is 671166023597. The next prime is 671166023641. The reversal of 671166023605 is 506320661176.

671166023605 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 671166023605 - 2³ = 671166023597 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 871643802 + ... + 871644571.

It is an arithmetic number, because the mean of its divisors is an integer number (62758381464).

Almost surely, 2^671166023605 is an apocalyptic number.

It is an amenable number.

671166023605 is a deficient number, since it is larger than the sum of its proper divisors (332968079819).

671166023605 is a wasteful number, since it uses less digits than its factorization.

671166023605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1743288396.

The product of its (nonzero) digits is 272160, while the sum is 43.

The spelling of 671166023605 in words is "six hundred seventy-one billion, one hundred sixty-six million, twenty-three thousand, six hundred five".