16446312011 has 6 divisors (see below), whose sum is σ = 17357465412. Its totient is φ = 15580716300.

The previous prime is 16446311963. The next prime is 16446312013. The reversal of 16446312011 is 11021364461.

It is not a de Polignac number, because 16446312011 - 2²² = 16442117707 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16446312013) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 22778465 + ... + 22779186.

It is an arithmetic number, because the mean of its divisors is an integer number (2892910902).

Almost surely, 2^16446312011 is an apocalyptic number.

16446312011 is a deficient number, since it is larger than the sum of its proper divisors (911153401).

16446312011 is an equidigital number, since it uses as much as digits as its factorization.

16446312011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45557689 (or 45557670 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 29.

Adding to 16446312011 its reverse (11021364461), we get a palindrome (27467676472).

The spelling of 16446312011 in words is "sixteen billion, four hundred forty-six million, three hundred twelve thousand, eleven".