671156227672 has 16 divisors (see below), whose sum is σ = 1438191916560. Its totient is φ = 287638383264.

The previous prime is 671156227603. The next prime is 671156227723. The reversal of 671156227672 is 276722651176.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5992466263 + ... + 5992466374.

It is an arithmetic number, because the mean of its divisors is an integer number (89886994785).

Almost surely, 2^671156227672 is an apocalyptic number.

It is an amenable number.

671156227672 is an abundant number, since it is smaller than the sum of its proper divisors (767035688888).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

671156227672 is a wasteful number, since it uses less digits than its factorization.

671156227672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11984932650 (or 11984932646 counting only the distinct ones).

The product of its digits is 2963520, while the sum is 52.

The spelling of 671156227672 in words is "six hundred seventy-one billion, one hundred fifty-six million, two hundred twenty-seven thousand, six hundred seventy-two".