16653344376447 has 16 divisors (see below), whose sum is σ = 24672062940000. Its totient is φ = 11102030845632.

The previous prime is 16653344376397. The next prime is 16653344376457. The reversal of 16653344376447 is 74467344335661.

16653344376447 is a `hidden beast` number, since 1 + 6 + 6 + 53 + 34 + 43 + 76 + 447 = 666.

It is not a de Polignac number, because 16653344376447 - 2⁸ = 16653344376191 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16653344376457) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3976422 + ... + 7008467.

It is an arithmetic number, because the mean of its divisors is an integer number (1542003933750).

Almost surely, 2^{16653344376447} is an apocalyptic number.

16653344376447 is a deficient number, since it is larger than the sum of its proper divisors (8018718563553).

16653344376447 is a wasteful number, since it uses less digits than its factorization.

16653344376447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11041047 (or 11041041 counting only the distinct ones).

The product of its digits is 365783040, while the sum is 63.

The spelling of 16653344376447 in words is "sixteen trillion, six hundred fifty-three billion, three hundred forty-four million, three hundred seventy-six thousand, four hundred forty-seven".