671576878146 has 16 divisors (see below), whose sum is σ = 1401551745984. Its totient is φ = 214125961104.

The previous prime is 671576878129. The next prime is 671576878151. The reversal of 671576878146 is 641878675176.

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 7 ways as a sum of consecutive naturals, for example, 2433249421 + ... + 2433249696.

It is an arithmetic number, because the mean of its divisors is an integer number (87596984124).

Almost surely, 2^671576878146 is an apocalyptic number.

671576878146 is an abundant number, since it is smaller than the sum of its proper divisors (729974867838).

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

671576878146 is a wasteful number, since it uses less digits than its factorization.

671576878146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4866499145.

The product of its digits is 94832640, while the sum is 66.

The spelling of 671576878146 in words is "six hundred seventy-one billion, five hundred seventy-six million, eight hundred seventy-eight thousand, one hundred forty-six".