43305645120061 has 2 divisors, whose sum is σ = 43305645120062. Its totient is φ = 43305645120060.

The previous prime is 43305645120011. The next prime is 43305645120077. The reversal of 43305645120061 is 16002154650334.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 39597444022500 + 3708201097561 = 6292650^2 + 1925669^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-43305645120061 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 43305645119996 and 43305645120023.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (43305645120011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21652822560030 + 21652822560031.

It is an arithmetic number, because the mean of its divisors is an integer number (21652822560031).

Almost surely, 2^{43305645120061} is an apocalyptic number.

It is an amenable number.

43305645120061 is a deficient number, since it is larger than the sum of its proper divisors (1).

43305645120061 is an equidigital number, since it uses as much as digits as its factorization.

43305645120061 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 259200, while the sum is 40.

Adding to 43305645120061 its reverse (16002154650334), we get a palindrome (59307799770395).

The spelling of 43305645120061 in words is "forty-three trillion, three hundred five billion, six hundred forty-five million, one hundred twenty thousand, sixty-one".