16755606717521 has 4 divisors (see below), whose sum is σ = 19149264820032. Its totient is φ = 14361948615012.

The previous prime is 16755606717373. The next prime is 16755606717523. The reversal of 16755606717521 is 12571760655761.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 16755606717521 - 2¹⁸ = 16755606455377 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16755606717523) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1196829051245 + ... + 1196829051258.

It is an arithmetic number, because the mean of its divisors is an integer number (4787316205008).

Almost surely, 2^{16755606717521} is an apocalyptic number.

It is an amenable number.

16755606717521 is a deficient number, since it is larger than the sum of its proper divisors (2393658102511).

16755606717521 is an equidigital number, since it uses as much as digits as its factorization.

16755606717521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2393658102510.

The product of its (nonzero) digits is 18522000, while the sum is 59.

The spelling of 16755606717521 in words is "sixteen trillion, seven hundred fifty-five billion, six hundred six million, seven hundred seventeen thousand, five hundred twenty-one".