16549822123 has 2 divisors, whose sum is σ = 16549822124. Its totient is φ = 16549822122.

The previous prime is 16549822057. The next prime is 16549822129. The reversal of 16549822123 is 32122894561.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 16549822123 - 2¹⁷ = 16549691051 is a prime.

It is a super-2 number, since 2×16549822123² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 16549822123.

It is not a weakly prime, because it can be changed into another prime (16549822129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8274911061 + 8274911062.

It is an arithmetic number, because the mean of its divisors is an integer number (8274911062).

Almost surely, 2^16549822123 is an apocalyptic number.

16549822123 is a deficient number, since it is larger than the sum of its proper divisors (1).

16549822123 is an equidigital number, since it uses as much as digits as its factorization.

16549822123 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 207360, while the sum is 43.

The spelling of 16549822123 in words is "sixteen billion, five hundred forty-nine million, eight hundred twenty-two thousand, one hundred twenty-three".