16565505067456 has 14 divisors (see below), whose sum is σ = 32872174118360. Its totient is φ = 8282752533696.

The previous prime is 16565505067453. The next prime is 16565505067487. The reversal of 16565505067456 is 65476050556561.

It is a super-2 number, since 2×16565505067456² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 16565505067394 and 16565505067403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16565505067453) 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 as a sum of consecutive naturals, namely, 129418008276 + ... + 129418008403.

Almost surely, 2^{16565505067456} is an apocalyptic number.

16565505067456 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

16565505067456 is a deficient number, since it is larger than the sum of its proper divisors (16306669050904).

16565505067456 is an equidigital number, since it uses as much as digits as its factorization.

16565505067456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 258836016691 (or 258836016681 counting only the distinct ones).

The product of its (nonzero) digits is 113400000, while the sum is 61.

The spelling of 16565505067456 in words is "sixteen trillion, five hundred sixty-five billion, five hundred five million, sixty-seven thousand, four hundred fifty-six".