671055297223128 has 64 divisors (see below), whose sum is σ = 1690248093696000. Its totient is φ = 222004489650432.

The previous prime is 671055297223109. The next prime is 671055297223237. The reversal of 671055297223128 is 821322792550176.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6744408 + ... + 37250471.

It is an arithmetic number, because the mean of its divisors is an integer number (26410126464000).

Almost surely, 2^{671055297223128} is an apocalyptic number.

It is an amenable number.

671055297223128 is an abundant number, since it is smaller than the sum of its proper divisors (1019192796472872).

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

671055297223128 is a wasteful number, since it uses less digits than its factorization.

671055297223128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43999664 (or 43999660 counting only the distinct ones).

The product of its (nonzero) digits is 25401600, while the sum is 60.

The spelling of 671055297223128 in words is "six hundred seventy-one trillion, fifty-five billion, two hundred ninety-seven million, two hundred twenty-three thousand, one hundred twenty-eight".