671520869280 has 288 divisors, whose sum is σ = 2333115504720. Its totient is φ = 175854551040.

The previous prime is 671520869191. The next prime is 671520869303. The reversal of 671520869280 is 82968025176.

It can be written as a sum of positive squares in 8 ways, for example, as 348983199504 + 322537669776 = 590748^2 + 567924^2 .

It is a tau number, because it is divible by the number of its divisors (288).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 17717550 + ... + 17755410.

Almost surely, 2^671520869280 is an apocalyptic number.

671520869280 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 671520869280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1166557752360).

671520869280 is an abundant number, since it is smaller than the sum of its proper divisors (1661594635440).

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

671520869280 is a wasteful number, since it uses less digits than its factorization.

671520869280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38104 (or 38093 counting only the distinct ones).

The product of its (nonzero) digits is 2903040, while the sum is 54.

The spelling of 671520869280 in words is "six hundred seventy-one billion, five hundred twenty million, eight hundred sixty-nine thousand, two hundred eighty".