43686016117 has 2 divisors, whose sum is σ = 43686016118. Its totient is φ = 43686016116.

The previous prime is 43686016037. The next prime is 43686016159. The reversal of 43686016117 is 71161068634.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 23245881156 + 20440134961 = 152466^2 + 142969^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-43686016117 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (43686017117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21843008058 + 21843008059.

It is an arithmetic number, because the mean of its divisors is an integer number (21843008059).

Almost surely, 2^43686016117 is an apocalyptic number.

It is an amenable number.

43686016117 is a deficient number, since it is larger than the sum of its proper divisors (1).

43686016117 is an equidigital number, since it uses as much as digits as its factorization.

43686016117 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 145152, while the sum is 43.

The spelling of 43686016117 in words is "forty-three billion, six hundred eighty-six million, sixteen thousand, one hundred seventeen".