16440015071 has 4 divisors (see below), whose sum is σ = 16441044672. Its totient is φ = 16438985472.

The previous prime is 16440015017. The next prime is 16440015079. The reversal of 16440015071 is 17051004461.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 17051004461 = 27967 ⋅609683.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16440015071 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16440015079) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 490466 + ... + 522911.

It is an arithmetic number, because the mean of its divisors is an integer number (4110261168).

Almost surely, 2^16440015071 is an apocalyptic number.

16440015071 is a deficient number, since it is larger than the sum of its proper divisors (1029601).

16440015071 is a wasteful number, since it uses less digits than its factorization.

16440015071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1029600.

The product of its (nonzero) digits is 3360, while the sum is 29.

The spelling of 16440015071 in words is "sixteen billion, four hundred forty million, fifteen thousand, seventy-one".