43385525859361 has 27 divisors (see below), whose sum is σ = 53613235888947. Its totient is φ = 34999455758400.

The previous prime is 43385525859317. The next prime is 43385525859367. The reversal of 43385525859361 is 16395852558334.

The square root of 43385525859361 is 6586769.

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., 33777658541025 + 9607867318336 = 5811855^2 + 3099656^2 .

It is not a de Polignac number, because 43385525859361 - 2¹¹ = 43385525857313 is a prime.

It is not an unprimeable number, because it can be changed into a prime (43385525859367) 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, 783797836 + ... + 783853186.

Almost surely, 2^{43385525859361} is an apocalyptic number.

43385525859361 is the 6586769-th square number.

43385525859361 is the 3293385-th centered octagonal number.

It is an amenable number.

43385525859361 is a deficient number, since it is larger than the sum of its proper divisors (10227710029586).

43385525859361 is an frugal number, since it uses more digits than its factorization.

43385525859361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110750 (or 55375 counting only the distinct ones).

The product of its digits is 466560000, while the sum is 67.

The spelling of 43385525859361 in words is "forty-three trillion, three hundred eighty-five billion, five hundred twenty-five million, eight hundred fifty-nine thousand, three hundred sixty-one".