671315180560 has 40 divisors (see below), whose sum is σ = 1561219997400. Its totient is φ = 268455155712.

The previous prime is 671315180531. The next prime is 671315180567. The reversal of 671315180560 is 65081513176.

It can be written as a sum of positive squares in 4 ways, for example, as 1300900624 + 670014279936 = 36068^2 + 818544^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is not an unprimeable number, because it can be changed into a prime (671315180567) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 802735 + ... + 1409614.

It is an arithmetic number, because the mean of its divisors is an integer number (39030499935).

Almost surely, 2^671315180560 is an apocalyptic number.

It is an amenable number.

671315180560 is an abundant number, since it is smaller than the sum of its proper divisors (889904816840).

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

671315180560 is a wasteful number, since it uses less digits than its factorization.

671315180560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2216155 (or 2216149 counting only the distinct ones).

The product of its (nonzero) digits is 151200, while the sum is 43.

The spelling of 671315180560 in words is "six hundred seventy-one billion, three hundred fifteen million, one hundred eighty thousand, five hundred sixty".