9587679801721 has 8 divisors (see below), whose sum is σ = 11180967699200. Its totient is φ = 8218011258324.

The previous prime is 9587679801703. The next prime is 9587679801767. The reversal of 9587679801721 is 1271089767859.

It is not a de Polignac number, because 9587679801721 - 2¹⁹ = 9587679277433 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9587679801781) 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, 13976209281 + ... + 13976209966.

It is an arithmetic number, because the mean of its divisors is an integer number (1397620962400).

Almost surely, 2^{9587679801721} is an apocalyptic number.

It is an amenable number.

9587679801721 is a deficient number, since it is larger than the sum of its proper divisors (1593287897479).

9587679801721 is an equidigital number, since it uses as much as digits as its factorization.

9587679801721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27952419268 (or 27952419254 counting only the distinct ones).

The product of its (nonzero) digits is 106686720, while the sum is 70.

The spelling of 9587679801721 in words is "nine trillion, five hundred eighty-seven billion, six hundred seventy-nine million, eight hundred one thousand, seven hundred twenty-one".