16445648776 has 32 divisors (see below), whose sum is σ = 31349090880. Its totient is φ = 8086478400.

The previous prime is 16445648771. The next prime is 16445648789. The reversal of 16445648776 is 67784654461.

It is a self number, because there is not a number n which added to its sum of digits gives 16445648776.

It is not an unprimeable number, because it can be changed into a prime (16445648771) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 189031 + ... + 261961.

It is an arithmetic number, because the mean of its divisors is an integer number (979659090).

Almost surely, 2^16445648776 is an apocalyptic number.

It is an amenable number.

16445648776 is a deficient number, since it is larger than the sum of its proper divisors (14903442104).

16445648776 is a wasteful number, since it uses less digits than its factorization.

16445648776 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73405 (or 73401 counting only the distinct ones).

The product of its digits is 27095040, while the sum is 58.

The spelling of 16445648776 in words is "sixteen billion, four hundred forty-five million, six hundred forty-eight thousand, seven hundred seventy-six".