671571516260 has 24 divisors (see below), whose sum is σ = 1410322756920. Its totient is φ = 268624306944.

The previous prime is 671571516257. The next prime is 671571516313. The reversal of 671571516260 is 62615175176.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 9454061824 + 662117454436 = 97232^2 + 813706^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1210742 + ... + 1676018.

It is an arithmetic number, because the mean of its divisors is an integer number (58763448205).

Almost surely, 2^671571516260 is an apocalyptic number.

It is an amenable number.

671571516260 is an abundant number, since it is smaller than the sum of its proper divisors (738751240660).

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

671571516260 is a wasteful number, since it uses less digits than its factorization.

671571516260 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 537455 (or 537453 counting only the distinct ones).

The product of its (nonzero) digits is 529200, while the sum is 47.

The spelling of 671571516260 in words is "six hundred seventy-one billion, five hundred seventy-one million, five hundred sixteen thousand, two hundred sixty".