16518464496 has 90 divisors (see below), whose sum is σ = 47878173200. Its totient is φ = 5316248448.

The previous prime is 16518464447. The next prime is 16518464497. The reversal of 16518464496 is 69446481561.

16518464496 is a `hidden beast` number, since 16 + 5 + 1 + 84 + 64 + 496 = 666.

It is a super-2 number, since 2×16518464496² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16518464497) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 52905 + ... + 189303.

Almost surely, 2^16518464496 is an apocalyptic number.

16518464496 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16518464496, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23939086600).

16518464496 is an abundant number, since it is smaller than the sum of its proper divisors (31359708704).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

16518464496 is a wasteful number, since it uses less digits than its factorization.

16518464496 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136471 (or 136433 counting only the distinct ones).

The product of its digits is 4976640, while the sum is 54.

The spelling of 16518464496 in words is "sixteen billion, five hundred eighteen million, four hundred sixty-four thousand, four hundred ninety-six".