23323516549 has 2 divisors, whose sum is σ = 23323516550. Its totient is φ = 23323516548.

The previous prime is 23323516499. The next prime is 23323516553. The reversal of 23323516549 is 94561532332.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22735211524 + 588305025 = 150782^2 + 24255^2 .

It is a cyclic number.

It is not a de Polignac number, because 23323516549 - 2³¹ = 21176032901 is a prime.

It is a super-2 number, since 2×23323516549² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23323516589) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11661758274 + 11661758275.

It is an arithmetic number, because the mean of its divisors is an integer number (11661758275).

Almost surely, 2^23323516549 is an apocalyptic number.

It is an amenable number.

23323516549 is a deficient number, since it is larger than the sum of its proper divisors (1).

23323516549 is an equidigital number, since it uses as much as digits as its factorization.

23323516549 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 583200, while the sum is 43.

The spelling of 23323516549 in words is "twenty-three billion, three hundred twenty-three million, five hundred sixteen thousand, five hundred forty-nine".