5678159986321 has 9 divisors (see below), whose sum is σ = 5696886535249. Its totient is φ = 5659494816784.

The previous prime is 5678159986307. The next prime is 5678159986327. The reversal of 5678159986321 is 1236899518765.

The square root of 5678159986321 is 2382889.

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

It can be written as a sum of positive squares in 4 ways, for example, as 1377226321 + 5676782760000 = 37111^2 + 2382600^2 .

It is not a de Polignac number, because 5678159986321 - 2²¹ = 5678157889169 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5678159986327) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 755372055 + ... + 755379571.

Almost surely, 2^{5678159986321} is an apocalyptic number.

5678159986321 is the 2382889-th square number.

5678159986321 is the 1191445-th centered octagonal number.

It is an amenable number.

5678159986321 is a deficient number, since it is larger than the sum of its proper divisors (18726548928).

5678159986321 is an frugal number, since it uses more digits than its factorization.

5678159986321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15668 (or 7834 counting only the distinct ones).

The product of its digits is 195955200, while the sum is 70.

The spelling of 5678159986321 in words is "five trillion, six hundred seventy-eight billion, one hundred fifty-nine million, nine hundred eighty-six thousand, three hundred twenty-one".