43526860261 has 2 divisors, whose sum is σ = 43526860262. Its totient is φ = 43526860260.

The previous prime is 43526860193. The next prime is 43526860283. The reversal of 43526860261 is 16206862534.

43526860261 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 41252047236 + 2274813025 = 203106^2 + 47695^2 .

It is a cyclic number.

It is not a de Polignac number, because 43526860261 - 2¹¹ = 43526858213 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (43526860291) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21763430130 + 21763430131.

It is an arithmetic number, because the mean of its divisors is an integer number (21763430131).

Almost surely, 2^43526860261 is an apocalyptic number.

It is an amenable number.

43526860261 is a deficient number, since it is larger than the sum of its proper divisors (1).

43526860261 is an equidigital number, since it uses as much as digits as its factorization.

43526860261 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 414720, while the sum is 43.

The spelling of 43526860261 in words is "forty-three billion, five hundred twenty-six million, eight hundred sixty thousand, two hundred sixty-one".