43424442517 has 2 divisors, whose sum is σ = 43424442518. Its totient is φ = 43424442516.

The previous prime is 43424442461. The next prime is 43424442547. The reversal of 43424442517 is 71524442434.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 41785083396 + 1639359121 = 204414^2 + 40489^2 .

It is a cyclic number.

It is not a de Polignac number, because 43424442517 - 2¹¹ = 43424440469 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 43424442517.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (43424442547) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21712221258 + 21712221259.

It is an arithmetic number, because the mean of its divisors is an integer number (21712221259).

Almost surely, 2^43424442517 is an apocalyptic number.

It is an amenable number.

43424442517 is a deficient number, since it is larger than the sum of its proper divisors (1).

43424442517 is an equidigital number, since it uses as much as digits as its factorization.

43424442517 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 430080, while the sum is 40.

The spelling of 43424442517 in words is "forty-three billion, four hundred twenty-four million, four hundred forty-two thousand, five hundred seventeen".