16326695549 has 2 divisors, whose sum is σ = 16326695550. Its totient is φ = 16326695548.

The previous prime is 16326695491. The next prime is 16326695621. The reversal of 16326695549 is 94559662361.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15754768324 + 571927225 = 125518^2 + 23915^2 .

It is an emirp because it is prime and its reverse (94559662361) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 16326695549 - 2²⁸ = 16058260093 is a prime.

It is a super-2 number, since 2×16326695549² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 16326695494 and 16326695503.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16326695249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8163347774 + 8163347775.

It is an arithmetic number, because the mean of its divisors is an integer number (8163347775).

Almost surely, 2^16326695549 is an apocalyptic number.

It is an amenable number.

16326695549 is a deficient number, since it is larger than the sum of its proper divisors (1).

16326695549 is an equidigital number, since it uses as much as digits as its factorization.

16326695549 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10497600, while the sum is 56.

The spelling of 16326695549 in words is "sixteen billion, three hundred twenty-six million, six hundred ninety-five thousand, five hundred forty-nine".