671740515880 has 64 divisors (see below), whose sum is σ = 1762584480000. Its totient is φ = 230311029312.

The previous prime is 671740515857. The next prime is 671740515899. The reversal of 671740515880 is 88515047176.

671740515880 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 24466620 + ... + 24494059.

It is an arithmetic number, because the mean of its divisors is an integer number (27540382500).

Almost surely, 2^671740515880 is an apocalyptic number.

It is an amenable number.

671740515880 is an abundant number, since it is smaller than the sum of its proper divisors (1090843964120).

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

671740515880 is a wasteful number, since it uses less digits than its factorization.

671740515880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48960711 (or 48960693 counting only the distinct ones).

The product of its (nonzero) digits is 1881600, while the sum is 52.

The spelling of 671740515880 in words is "six hundred seventy-one billion, seven hundred forty million, five hundred fifteen thousand, eight hundred eighty".