16647662487672 has 64 divisors (see below), whose sum is σ = 46876979652000. Its totient is φ = 5473204100352.

The previous prime is 16647662487649. The next prime is 16647662487713. The reversal of 16647662487672 is 27678426674661.

16647662487672 is a `hidden beast` number, since 1 + 6 + 6 + 4 + 76 + 6 + 2 + 487 + 6 + 72 = 666.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a self number, because there is not a number n which added to its sum of digits gives 16647662487672.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 527878147 + ... + 527909682.

Almost surely, 2^{16647662487672} is an apocalyptic number.

16647662487672 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

16647662487672 is an abundant number, since it is smaller than the sum of its proper divisors (30229317164328).

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

16647662487672 is a wasteful number, since it uses less digits than its factorization.

16647662487672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1055787917 (or 1055787907 counting only the distinct ones).

The product of its digits is 1365590016, while the sum is 72.

The spelling of 16647662487672 in words is "sixteen trillion, six hundred forty-seven billion, six hundred sixty-two million, four hundred eighty-seven thousand, six hundred seventy-two".