671618435008 has 14 divisors (see below), whose sum is σ = 1332742832096. Its totient is φ = 335809217472.

The previous prime is 671618434997. The next prime is 671618435009. The reversal of 671618435008 is 800534816176.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (671618435009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5247018960 + ... + 5247019087.

Almost surely, 2^671618435008 is an apocalyptic number.

It is an amenable number.

671618435008 is a deficient number, since it is larger than the sum of its proper divisors (661124397088).

671618435008 is a wasteful number, since it uses less digits than its factorization.

671618435008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10494038059 (or 10494038049 counting only the distinct ones).

The product of its (nonzero) digits is 967680, while the sum is 49.

The spelling of 671618435008 in words is "six hundred seventy-one billion, six hundred eighteen million, four hundred thirty-five thousand, eight".