43260730589521 has 9 divisors (see below), whose sum is σ = 43294491826833. Its totient is φ = 43226995674240.

The previous prime is 43260730589507. The next prime is 43260730589711. The reversal of 43260730589521 is 12598503706234.

The square root of 43260730589521 is 6577289.

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 21244365123921 + 22016365465600 = 4609161^2 + 4692160^2 .

It is not a de Polignac number, because 43260730589521 - 2⁴³ = 34464637567313 is a prime.

It is a super-2 number, since 2×43260730589521² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (43260730587521) 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, 16581344265 + ... + 16581346873.

It is a 1-persistent number, because it is pandigital, but 2⋅43260730589521 = 86521461179042 is not.

Almost surely, 2^{43260730589521} is an apocalyptic number.

43260730589521 is the 6577289-th square number.

43260730589521 is the 3288645-th centered octagonal number.

It is an amenable number.

43260730589521 is a deficient number, since it is larger than the sum of its proper divisors (33761237312).

43260730589521 is an frugal number, since it uses more digits than its factorization.

43260730589521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10260 (or 5130 counting only the distinct ones).

The product of its (nonzero) digits is 10886400, while the sum is 55.

The spelling of 43260730589521 in words is "forty-three trillion, two hundred sixty billion, seven hundred thirty million, five hundred eighty-nine thousand, five hundred twenty-one".