2643179913361 has 4 divisors (see below), whose sum is σ = 2846501445172. Its totient is φ = 2439858381552.

The previous prime is 2643179913281. The next prime is 2643179913403. The reversal of 2643179913361 is 1633199713462.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1135119776400 + 1508060136961 = 1065420^2 + 1228031^2 .

It is a cyclic number.

It is not a de Polignac number, because 2643179913361 - 2¹⁷ = 2643179782289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2643179913161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 101660765886 + ... + 101660765911.

It is an arithmetic number, because the mean of its divisors is an integer number (711625361293).

Almost surely, 2^{2643179913361} is an apocalyptic number.

It is an amenable number.

2643179913361 is a deficient number, since it is larger than the sum of its proper divisors (203321531811).

2643179913361 is a wasteful number, since it uses less digits than its factorization.

2643179913361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 203321531810.

The product of its digits is 4408992, while the sum is 55.

The spelling of 2643179913361 in words is "two trillion, six hundred forty-three billion, one hundred seventy-nine million, nine hundred thirteen thousand, three hundred sixty-one".