16818617472 has 64 divisors (see below), whose sum is σ = 44995994400. Its totient is φ = 5565855744.

The previous prime is 16818617471. The next prime is 16818617479. The reversal of 16818617472 is 27471681861.

It is a tau number, because it is divible by the number of its divisors (64).

It is not an unprimeable number, because it can be changed into a prime (16818617471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 104173 + ... + 210924.

Almost surely, 2^16818617472 is an apocalyptic number.

16818617472 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

16818617472 is an abundant number, since it is smaller than the sum of its proper divisors (28177376928).

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

16818617472 is a wasteful number, since it uses less digits than its factorization.

16818617472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 315253 (or 315241 counting only the distinct ones).

The product of its digits is 903168, while the sum is 51.

The spelling of 16818617472 in words is "sixteen billion, eight hundred eighteen million, six hundred seventeen thousand, four hundred seventy-two".