43366061987 has 2 divisors, whose sum is σ = 43366061988. Its totient is φ = 43366061986.

The previous prime is 43366061969. The next prime is 43366062007. The reversal of 43366061987 is 78916066334.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 43366061987 - 2²⁰ = 43365013411 is a prime.

It is not a weakly prime, because it can be changed into another prime (43366061917) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21683030993 + 21683030994.

It is an arithmetic number, because the mean of its divisors is an integer number (21683030994).

Almost surely, 2^43366061987 is an apocalyptic number.

43366061987 is a deficient number, since it is larger than the sum of its proper divisors (1).

43366061987 is an equidigital number, since it uses as much as digits as its factorization.

43366061987 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3919104, while the sum is 53.

The spelling of 43366061987 in words is "forty-three billion, three hundred sixty-six million, sixty-one thousand, nine hundred eighty-seven".