16449822621969 has 24 divisors (see below), whose sum is σ = 24126726190560. Its totient is φ = 9961961338560.

The previous prime is 16449822621961. The next prime is 16449822622003. The reversal of 16449822621969 is 96912622894461.

It is not a de Polignac number, because 16449822621969 - 2³ = 16449822621961 is a prime.

It is a super-2 number, since 2×16449822621969² (a number of 27 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (16449822621961) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 16861564 + ... + 17810445.

It is an arithmetic number, because the mean of its divisors is an integer number (1005280257940).

Almost surely, 2^{16449822621969} is an apocalyptic number.

It is an amenable number.

16449822621969 is a deficient number, since it is larger than the sum of its proper divisors (7676903568591).

16449822621969 is a wasteful number, since it uses less digits than its factorization.

16449822621969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34673341 (or 34673330 counting only the distinct ones).

The product of its digits is 161243136, while the sum is 69.

The spelling of 16449822621969 in words is "sixteen trillion, four hundred forty-nine billion, eight hundred twenty-two million, six hundred twenty-one thousand, nine hundred sixty-nine".