8128443541 has 2 divisors, whose sum is σ = 8128443542. Its totient is φ = 8128443540.

The previous prime is 8128443469. The next prime is 8128443569. The reversal of 8128443541 is 1453448218.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4916954641 + 3211488900 = 70121^2 + 56670^2 .

It is a cyclic number.

It is not a de Polignac number, because 8128443541 - 2¹³ = 8128435349 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 8128443494 and 8128443503.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8128443581) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4064221770 + 4064221771.

It is an arithmetic number, because the mean of its divisors is an integer number (4064221771).

Almost surely, 2^8128443541 is an apocalyptic number.

It is an amenable number.

8128443541 is a deficient number, since it is larger than the sum of its proper divisors (1).

8128443541 is an equidigital number, since it uses as much as digits as its factorization.

8128443541 is an evil number, because the sum of its binary digits is even.

The product of its digits is 122880, while the sum is 40.

The square root of 8128443541 is about 90157.8811918293. The cubic root of 8128443541 is about 2010.6468501346.

The spelling of 8128443541 in words is "eight billion, one hundred twenty-eight million, four hundred forty-three thousand, five hundred forty-one".