671849396044 has 6 divisors (see below), whose sum is σ = 1175736443084. Its totient is φ = 335924698020.

The previous prime is 671849396039. The next prime is 671849396077. The reversal of 671849396044 is 440693948176.

671849396044 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×671849396044² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83981174502 + ... + 83981174509.

Almost surely, 2^671849396044 is an apocalyptic number.

It is an amenable number.

671849396044 is a deficient number, since it is larger than the sum of its proper divisors (503887047040).

671849396044 is a wasteful number, since it uses less digits than its factorization.

671849396044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167962349015 (or 167962349013 counting only the distinct ones).

The product of its (nonzero) digits is 31352832, while the sum is 61.

The spelling of 671849396044 in words is "six hundred seventy-one billion, eight hundred forty-nine million, three hundred ninety-six thousand, forty-four".