671112265617 has 36 divisors (see below), whose sum is σ = 1013179461840. Its totient is φ = 427937362272.

The previous prime is 671112265609. The next prime is 671112265619. The reversal of 671112265617 is 716562211176.

671112265617 is a `hidden beast` number, since 6 + 7 + 1 + 1 + 1 + 2 + 26 + 5 + 617 = 666.

It is not a de Polignac number, because 671112265617 - 2³ = 671112265609 is a prime.

It is not an unprimeable number, because it can be changed into a prime (671112265619) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 265338 + ... + 1188540.

It is an arithmetic number, because the mean of its divisors is an integer number (28143873940).

Almost surely, 2^671112265617 is an apocalyptic number.

It is an amenable number.

671112265617 is a deficient number, since it is larger than the sum of its proper divisors (342067196223).

671112265617 is a wasteful number, since it uses less digits than its factorization.

671112265617 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 923342 (or 923302 counting only the distinct ones).

The product of its digits is 211680, while the sum is 45.

The spelling of 671112265617 in words is "six hundred seventy-one billion, one hundred twelve million, two hundred sixty-five thousand, six hundred seventeen".