43424442461 has 2 divisors, whose sum is σ = 43424442462. Its totient is φ = 43424442460.

The previous prime is 43424442433. The next prime is 43424442517. The reversal of 43424442461 is 16424442434.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 36132307225 + 7292135236 = 190085^2 + 85394^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-43424442461 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (43424442401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21712221230 + 21712221231.

It is an arithmetic number, because the mean of its divisors is an integer number (21712221231).

Almost surely, 2^43424442461 is an apocalyptic number.

It is an amenable number.

43424442461 is a deficient number, since it is larger than the sum of its proper divisors (1).

43424442461 is an equidigital number, since it uses as much as digits as its factorization.

43424442461 is an evil number, because the sum of its binary digits is even.

The product of its digits is 294912, while the sum is 38.

Adding to 43424442461 its reverse (16424442434), we get a palindrome (59848884895).

The spelling of 43424442461 in words is "forty-three billion, four hundred twenty-four million, four hundred forty-two thousand, four hundred sixty-one".