16531007688667 has 2 divisors, whose sum is σ = 16531007688668. Its totient is φ = 16531007688666.

The previous prime is 16531007688649. The next prime is 16531007688683. The reversal of 16531007688667 is 76688670013561.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 16531007688667 - 2¹¹ = 16531007686619 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 16531007688599 and 16531007688608.

It is not a weakly prime, because it can be changed into another prime (16531007683667) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8265503844333 + 8265503844334.

It is an arithmetic number, because the mean of its divisors is an integer number (8265503844334).

Almost surely, 2^{16531007688667} is an apocalyptic number.

16531007688667 is a deficient number, since it is larger than the sum of its proper divisors (1).

16531007688667 is an equidigital number, since it uses as much as digits as its factorization.

16531007688667 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 60963840, while the sum is 64.

The spelling of 16531007688667 in words is "sixteen trillion, five hundred thirty-one billion, seven million, six hundred eighty-eight thousand, six hundred sixty-seven".