16551160006561 has 8 divisors (see below), whose sum is σ = 16936127794080. Its totient is φ = 16166194814112.

The previous prime is 16551160006489. The next prime is 16551160006607. The reversal of 16551160006561 is 16560006115561.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 16551160006561 - 2⁴¹ = 14352136751009 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16551160006061) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19322670 + ... + 20161048.

It is an arithmetic number, because the mean of its divisors is an integer number (2117015974260).

Almost surely, 2^{16551160006561} is an apocalyptic number.

It is an amenable number.

16551160006561 is a deficient number, since it is larger than the sum of its proper divisors (384967787519).

16551160006561 is an equidigital number, since it uses as much as digits as its factorization.

16551160006561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1297535.

The product of its (nonzero) digits is 162000, while the sum is 43.

The spelling of 16551160006561 in words is "sixteen trillion, five hundred fifty-one billion, one hundred sixty million, six thousand, five hundred sixty-one".