43161158551663 has 2 divisors, whose sum is σ = 43161158551664. Its totient is φ = 43161158551662.

The previous prime is 43161158551661. The next prime is 43161158551723. The reversal of 43161158551663 is 36615585116134.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 43161158551663 - 2¹ = 43161158551661 is a prime.

Together with 43161158551661, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (43161158551661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21580579275831 + 21580579275832.

It is an arithmetic number, because the mean of its divisors is an integer number (21580579275832).

Almost surely, 2^{43161158551663} is an apocalyptic number.

43161158551663 is a deficient number, since it is larger than the sum of its proper divisors (1).

43161158551663 is an equidigital number, since it uses as much as digits as its factorization.

43161158551663 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7776000, while the sum is 55.

The spelling of 43161158551663 in words is "forty-three trillion, one hundred sixty-one billion, one hundred fifty-eight million, five hundred fifty-one thousand, six hundred sixty-three".