671857560080 has 80 divisors (see below), whose sum is σ = 1785384478080. Its totient is φ = 230330136576.

The previous prime is 671857560067. The next prime is 671857560091. The reversal of 671857560080 is 80065758176.

It is a tau number, because it is divible by the number of its divisors (80).

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, 6865736 + ... + 6962904.

It is an arithmetic number, because the mean of its divisors is an integer number (22317305976).

Almost surely, 2^671857560080 is an apocalyptic number.

It is an amenable number.

671857560080 is an abundant number, since it is smaller than the sum of its proper divisors (1113526918000).

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

671857560080 is a wasteful number, since it uses less digits than its factorization.

671857560080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109536 (or 109530 counting only the distinct ones).

The product of its (nonzero) digits is 2822400, while the sum is 53.

The spelling of 671857560080 in words is "six hundred seventy-one billion, eight hundred fifty-seven million, five hundred sixty thousand, eighty".