43491168011 has 2 divisors, whose sum is σ = 43491168012. Its totient is φ = 43491168010.

The previous prime is 43491167971. The next prime is 43491168023. The reversal of 43491168011 is 11086119434.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 43491168011 - 2¹⁰ = 43491166987 is a prime.

It is a super-2 number, since 2×43491168011² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (43491161011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21745584005 + 21745584006.

It is an arithmetic number, because the mean of its divisors is an integer number (21745584006).

Almost surely, 2^43491168011 is an apocalyptic number.

43491168011 is a deficient number, since it is larger than the sum of its proper divisors (1).

43491168011 is an equidigital number, since it uses as much as digits as its factorization.

43491168011 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20736, while the sum is 38.

The spelling of 43491168011 in words is "forty-three billion, four hundred ninety-one million, one hundred sixty-eight thousand, eleven".