16509847468 has 12 divisors (see below), whose sum is σ = 29437369920. Its totient is φ = 8099170352.

The previous prime is 16509847439. The next prime is 16509847477. The reversal of 16509847468 is 86474890561.

It is a super-2 number, since 2×16509847468² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38938108 + ... + 38938531.

It is an arithmetic number, because the mean of its divisors is an integer number (2453114160).

Almost surely, 2^16509847468 is an apocalyptic number.

It is an amenable number.

16509847468 is a deficient number, since it is larger than the sum of its proper divisors (12927522452).

16509847468 is a wasteful number, since it uses less digits than its factorization.

16509847468 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77876696 (or 77876694 counting only the distinct ones).

The product of its (nonzero) digits is 11612160, while the sum is 58.

The spelling of 16509847468 in words is "sixteen billion, five hundred nine million, eight hundred forty-seven thousand, four hundred sixty-eight".