16446312785 has 32 divisors (see below), whose sum is σ = 23267058432. Its totient is φ = 10926938880.

The previous prime is 16446312767. The next prime is 16446312787. The reversal of 16446312785 is 58721364461.

It is not a de Polignac number, because 16446312785 - 2⁸ = 16446312529 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16446312787) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 85559 + ... + 200531.

It is an arithmetic number, because the mean of its divisors is an integer number (727095576).

Almost surely, 2^16446312785 is an apocalyptic number.

It is an amenable number.

16446312785 is a deficient number, since it is larger than the sum of its proper divisors (6820745647).

16446312785 is a wasteful number, since it uses less digits than its factorization.

16446312785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115113.

The product of its digits is 967680, while the sum is 47.

The spelling of 16446312785 in words is "sixteen billion, four hundred forty-six million, three hundred twelve thousand, seven hundred eighty-five".