43511211061 has 2 divisors, whose sum is σ = 43511211062. Its totient is φ = 43511211060.

The previous prime is 43511210929. The next prime is 43511211067. The reversal of 43511211061 is 16011211534.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 34793440900 + 8717770161 = 186530^2 + 93369^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-43511211061 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (43511211067) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21755605530 + 21755605531.

It is an arithmetic number, because the mean of its divisors is an integer number (21755605531).

Almost surely, 2^43511211061 is an apocalyptic number.

It is an amenable number.

43511211061 is a deficient number, since it is larger than the sum of its proper divisors (1).

43511211061 is an equidigital number, since it uses as much as digits as its factorization.

43511211061 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 720, while the sum is 25.

Adding to 43511211061 its reverse (16011211534), we get a palindrome (59522422595).

The spelling of 43511211061 in words is "forty-three billion, five hundred eleven million, two hundred eleven thousand, sixty-one".