43648973787169 has 27 divisors (see below), whose sum is σ = 46602552258387. Its totient is φ = 40876568919648.

The previous prime is 43648973787053. The next prime is 43648973787173. The reversal of 43648973787169 is 96178737984634.

The square root of 43648973787169 is 6606737.

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

It can be written as a sum of positive squares in only one way, i.e., 8381528737569 + 35267445049600 = 2895087^2 + 5938640^2 .

It is not a de Polignac number, because 43648973787169 - 2¹¹ = 43648973785121 is a prime.

It is a super-2 number, since 2×43648973787169² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 43648973787092 and 43648973787101.

It is not an unprimeable number, because it can be changed into a prime (43648973787179) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 11171990314 + ... + 11171994220.

Almost surely, 2^{43648973787169} is an apocalyptic number.

43648973787169 is the 6606737-th square number.

43648973787169 is the 3303369-th centered octagonal number.

It is an amenable number.

43648973787169 is a deficient number, since it is larger than the sum of its proper divisors (2953578471218).

43648973787169 is an frugal number, since it uses more digits than its factorization.

43648973787169 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8030 (or 4015 counting only the distinct ones).

The product of its digits is 9217732608, while the sum is 82.

The spelling of 43648973787169 in words is "forty-three trillion, six hundred forty-eight billion, nine hundred seventy-three million, seven hundred eighty-seven thousand, one hundred sixty-nine".