43135054526261 has 4 divisors (see below), whose sum is σ = 43135082783232. Its totient is φ = 43135026269292.

The previous prime is 43135054526233. The next prime is 43135054526279. The reversal of 43135054526261 is 16262545053134.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 43135054526261 - 2³⁰ = 43133980784437 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43135054526561) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11699495 + ... + 14938148.

It is an arithmetic number, because the mean of its divisors is an integer number (10783770695808).

Almost surely, 2^{43135054526261} is an apocalyptic number.

It is an amenable number.

43135054526261 is a deficient number, since it is larger than the sum of its proper divisors (28256971).

43135054526261 is a wasteful number, since it uses less digits than its factorization.

43135054526261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28256970.

The product of its (nonzero) digits is 2592000, while the sum is 47.

Adding to 43135054526261 its reverse (16262545053134), we get a palindrome (59397599579395).

The spelling of 43135054526261 in words is "forty-three trillion, one hundred thirty-five billion, fifty-four million, five hundred twenty-six thousand, two hundred sixty-one".