2871721586680 has 32 divisors (see below), whose sum is σ = 6462478416240. Its totient is φ = 1148492217600.

The previous prime is 2871721586653. The next prime is 2871721586683. The reversal of 2871721586680 is 866851271782.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2871721586683) 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, 5901069 + ... + 6369148.

Almost surely, 2^{2871721586680} is an apocalyptic number.

2871721586680 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2871721586680 is an abundant number, since it is smaller than the sum of its proper divisors (3590756829560).

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

2871721586680 is a wasteful number, since it uses less digits than its factorization.

2871721586680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12276079 (or 12276075 counting only the distinct ones).

The product of its (nonzero) digits is 18063360, while the sum is 61.

The spelling of 2871721586680 in words is "two trillion, eight hundred seventy-one billion, seven hundred twenty-one million, five hundred eighty-six thousand, six hundred eighty".