671052561267020 has 48 divisors (see below), whose sum is σ = 1423505163225600. Its totient is φ = 265699486483200.

The previous prime is 671052561266981. The next prime is 671052561267041. The reversal of 671052561267020 is 20762165250176.

It is a self number, because there is not a number n which added to its sum of digits gives 671052561267020.

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, 31536815 + ... + 48339174.

It is an arithmetic number, because the mean of its divisors is an integer number (29656357567200).

Almost surely, 2^{671052561267020} is an apocalyptic number.

It is an amenable number.

671052561267020 is an abundant number, since it is smaller than the sum of its proper divisors (752452601958580).

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

671052561267020 is a wasteful number, since it uses less digits than its factorization.

671052561267020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79880258 (or 79880256 counting only the distinct ones).

The product of its (nonzero) digits is 2116800, while the sum is 50.

The spelling of 671052561267020 in words is "six hundred seventy-one trillion, fifty-two billion, five hundred sixty-one million, two hundred sixty-seven thousand, twenty".