16518734078 has 24 divisors (see below), whose sum is σ = 31443826104. Its totient is φ = 6435870000.

The previous prime is 16518734041. The next prime is 16518734081. The reversal of 16518734078 is 87043781561.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7660673 + ... + 7662828.

It is an arithmetic number, because the mean of its divisors is an integer number (1310159421).

Almost surely, 2^16518734078 is an apocalyptic number.

16518734078 is a deficient number, since it is larger than the sum of its proper divisors (14925092026).

16518734078 is a wasteful number, since it uses less digits than its factorization.

16518734078 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15323528 (or 15323521 counting only the distinct ones).

The product of its (nonzero) digits is 1128960, while the sum is 50.

The spelling of 16518734078 in words is "sixteen billion, five hundred eighteen million, seven hundred thirty-four thousand, seventy-eight".