43880330353729 has 9 divisors (see below), whose sum is σ = 44545486287267. Its totient is φ = 43224962851224.

The previous prime is 43880330353721. The next prime is 43880330353759. The reversal of 43880330353729 is 92735303308834.

The square root of 43880330353729 is 6624223.

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., 42297112126129 + 1583218227600 = 6503623^2 + 1258260^2 .

It is not a de Polignac number, because 43880330353729 - 2³ = 43880330353721 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (43880330353721) 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, 443773507 + ... + 443872375.

It is an arithmetic number, because the mean of its divisors is an integer number (4949498476363).

Almost surely, 2^{43880330353729} is an apocalyptic number.

43880330353729 is the 6624223-rd square number.

43880330353729 is the 3312112-nd centered octagonal number.

It is an amenable number.

43880330353729 is a deficient number, since it is larger than the sum of its proper divisors (665155933538).

43880330353729 is an frugal number, since it uses more digits than its factorization.

43880330353729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 197872 (or 98936 counting only the distinct ones).

The product of its (nonzero) digits is 39191040, while the sum is 58.

The spelling of 43880330353729 in words is "forty-three trillion, eight hundred eighty billion, three hundred thirty million, three hundred fifty-three thousand, seven hundred twenty-nine".