671649343946176 has 14 divisors (see below), whose sum is σ = 1332804166893320. Its totient is φ = 335824671973056.

The previous prime is 671649343946167. The next prime is 671649343946177.

671649343946176 is nontrivially palindromic in base 10.

It is a super-2 number, since 2×671649343946176² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (671649343946177) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5247260499516 + ... + 5247260499643.

Almost surely, 2^{671649343946176} is an apocalyptic number.

It is an amenable number.

671649343946176 is a deficient number, since it is larger than the sum of its proper divisors (661154822947144).

671649343946176 is a wasteful number, since it uses less digits than its factorization.

671649343946176 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10494520999171 (or 10494520999161 counting only the distinct ones).

The product of its digits is 2962842624, while the sum is 76.

The spelling of 671649343946176 in words is "six hundred seventy-one trillion, six hundred forty-nine billion, three hundred forty-three million, nine hundred forty-six thousand, one hundred seventy-six".