9859719320361 has 63 divisors (see below), whose sum is σ = 15705841378773. Its totient is φ = 6185586228480.

The previous prime is 9859719320359. The next prime is 9859719320369. The reversal of 9859719320361 is 1630239179589.

The square root of 9859719320361 is 3140019.

It is a perfect power (a square), and thus also a powerful number.

9859719320361 is a `hidden beast` number, since 9 + 8 + 597 + 1 + 9 + 3 + 2 + 0 + 36 + 1 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 2848111893225 + 7011607427136 = 1687635^2 + 2647944^2 .

It is not a de Polignac number, because 9859719320361 - 2¹ = 9859719320359 is a prime.

It is not an unprimeable number, because it can be changed into a prime (9859719320369) by changing a digit.

It is a polite number, since it can be written in 62 ways as a sum of consecutive naturals, for example, 1441265301 + ... + 1441272141.

Almost surely, 2^{9859719320361} is an apocalyptic number.

9859719320361 is the 3140019-th square number.

9859719320361 is the 1570010-th centered octagonal number.

It is an amenable number.

9859719320361 is a deficient number, since it is larger than the sum of its proper divisors (5846122058412).

9859719320361 is an frugal number, since it uses more digits than its factorization.

9859719320361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13734 (or 6861 counting only the distinct ones).

The product of its (nonzero) digits is 22044960, while the sum is 63.

The spelling of 9859719320361 in words is "nine trillion, eight hundred fifty-nine billion, seven hundred nineteen million, three hundred twenty thousand, three hundred sixty-one".