16316509784 has 8 divisors (see below), whose sum is σ = 30593455860. Its totient is φ = 8158254888.

The previous prime is 16316509771. The next prime is 16316509789. The reversal of 16316509784 is 48790561361.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16316509789) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1019781854 + ... + 1019781869.

Almost surely, 2^16316509784 is an apocalyptic number.

It is an amenable number.

16316509784 is a deficient number, since it is larger than the sum of its proper divisors (14276946076).

16316509784 is a wasteful number, since it uses less digits than its factorization.

16316509784 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2039563729 (or 2039563725 counting only the distinct ones).

The product of its (nonzero) digits is 1088640, while the sum is 50.

The spelling of 16316509784 in words is "sixteen billion, three hundred sixteen million, five hundred nine thousand, seven hundred eighty-four".