43276655959549 has 2 divisors, whose sum is σ = 43276655959550. Its totient is φ = 43276655959548.

The previous prime is 43276655959447. The next prime is 43276655959567. The reversal of 43276655959549 is 94595955667234.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 36083628511225 + 7193027448324 = 6006965^2 + 2681982^2 .

It is a cyclic number.

It is not a de Polignac number, because 43276655959549 - 2²⁷ = 43276521741821 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (43276655959249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21638327979774 + 21638327979775.

It is an arithmetic number, because the mean of its divisors is an integer number (21638327979775).

Almost surely, 2^{43276655959549} is an apocalyptic number.

It is an amenable number.

43276655959549 is a deficient number, since it is larger than the sum of its proper divisors (1).

43276655959549 is an equidigital number, since it uses as much as digits as its factorization.

43276655959549 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11022480000, while the sum is 79.

The spelling of 43276655959549 in words is "forty-three trillion, two hundred seventy-six billion, six hundred fifty-five million, nine hundred fifty-nine thousand, five hundred forty-nine".