671166023648 has 24 divisors (see below), whose sum is σ = 1321520811912. Its totient is φ = 335541690496.

The previous prime is 671166023641. The next prime is 671166023699. The reversal of 671166023648 is 846320661176.

It is a junction number, because it is equal to n+sod(n) for n = 671166023596 and 671166023605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (671166023641) 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, 1026515 + ... + 1547922.

It is an arithmetic number, because the mean of its divisors is an integer number (55063367163).

Almost surely, 2^671166023648 is an apocalyptic number.

It is an amenable number.

671166023648 is a deficient number, since it is larger than the sum of its proper divisors (650354788264).

671166023648 is a wasteful number, since it uses less digits than its factorization.

671166023648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2582594 (or 2582586 counting only the distinct ones).

The product of its (nonzero) digits is 1741824, while the sum is 50.

The spelling of 671166023648 in words is "six hundred seventy-one billion, one hundred sixty-six million, twenty-three thousand, six hundred forty-eight".