2174943603361 has 3 divisors (see below), whose sum is σ = 2174945078131. Its totient is φ = 2174942128592.

The previous prime is 2174943603341. The next prime is 2174943603377. The reversal of 2174943603361 is 1633063494712.

The square root of 2174943603361 is 1474769.

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

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 1716181220961 + 458762382400 = 1310031^2 + 677320^2 .

It is not a de Polignac number, because 2174943603361 - 2¹³ = 2174943595169 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2174943603311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 737385 + ... + 2212153.

Almost surely, 2^{2174943603361} is an apocalyptic number.

2174943603361 is the 1474769-th square number.

2174943603361 is the 737385-th centered octagonal number.

It is an amenable number.

2174943603361 is a deficient number, since it is larger than the sum of its proper divisors (1474770).

2174943603361 is an frugal number, since it uses more digits than its factorization.

2174943603361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2949538 (or 1474769 counting only the distinct ones).

The product of its (nonzero) digits is 1959552, while the sum is 49.

Multiplying 2174943603361 by its sum of digits (49), we get a square (106572236564689 = 10323383²).

The spelling of 2174943603361 in words is "two trillion, one hundred seventy-four billion, nine hundred forty-three million, six hundred three thousand, three hundred sixty-one".