16554523666667 has 8 divisors (see below), whose sum is σ = 18919494566112. Its totient is φ = 14189562504000.

The previous prime is 16554523666561. The next prime is 16554523666727. The reversal of 16554523666667 is 76666632545561.

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 16554523666667 - 2⁸ = 16554523666411 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 16554523666597 and 16554523666606.

It is not an unprimeable number, because it can be changed into a prime (16554523668667) 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, 1670567 + ... + 5991647.

It is an arithmetic number, because the mean of its divisors is an integer number (2364936820764).

Almost surely, 2^{16554523666667} is an apocalyptic number.

16554523666667 is a deficient number, since it is larger than the sum of its proper divisors (2364970899445).

16554523666667 is an equidigital number, since it uses as much as digits as its factorization.

16554523666667 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4868389.

The product of its digits is 979776000, while the sum is 68.

The spelling of 16554523666667 in words is "sixteen trillion, five hundred fifty-four billion, five hundred twenty-three million, six hundred sixty-six thousand, six hundred sixty-seven".