671775716368 has 20 divisors (see below), whose sum is σ = 1319897360448. Its totient is φ = 331157042720.

The previous prime is 671775716357. The next prime is 671775716371. The reversal of 671775716368 is 863617577176.

It is a happy number.

It is a super-2 number, since 2×671775716368² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 295674796 + ... + 295677067.

Almost surely, 2^671775716368 is an apocalyptic number.

It is an amenable number.

671775716368 is a deficient number, since it is larger than the sum of its proper divisors (648121644080).

671775716368 is a wasteful number, since it uses less digits than its factorization.

671775716368 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 591351942 (or 591351936 counting only the distinct ones).

The product of its digits is 62233920, while the sum is 64.

The spelling of 671775716368 in words is "six hundred seventy-one billion, seven hundred seventy-five million, seven hundred sixteen thousand, three hundred sixty-eight".