16556101069 has 2 divisors, whose sum is σ = 16556101070. Its totient is φ = 16556101068.

The previous prime is 16556101057. The next prime is 16556101181. The reversal of 16556101069 is 96010165561.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14972459044 + 1583642025 = 122362^2 + 39795^2 .

It is a cyclic number.

It is not a de Polignac number, because 16556101069 - 2¹⁵ = 16556068301 is a prime.

It is a super-2 number, since 2×16556101069² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16556171069) 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, 8278050534 + 8278050535.

It is an arithmetic number, because the mean of its divisors is an integer number (8278050535).

Almost surely, 2^16556101069 is an apocalyptic number.

It is an amenable number.

16556101069 is a deficient number, since it is larger than the sum of its proper divisors (1).

16556101069 is an equidigital number, since it uses as much as digits as its factorization.

16556101069 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48600, while the sum is 40.

The spelling of 16556101069 in words is "sixteen billion, five hundred fifty-six million, one hundred one thousand, sixty-nine".