16553045444 has 24 divisors (see below), whose sum is σ = 32552479680. Its totient is φ = 7307698464.

The previous prime is 16553045419. The next prime is 16553045449. The reversal of 16553045444 is 44454035561.

It is a super-2 number, since 2×16553045444² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (16553045449) 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 in 7 ways as a sum of consecutive naturals, for example, 6918974 + ... + 6921365.

It is an arithmetic number, because the mean of its divisors is an integer number (1356353320).

Almost surely, 2^16553045444 is an apocalyptic number.

It is an amenable number.

16553045444 is a deficient number, since it is larger than the sum of its proper divisors (15999434236).

16553045444 is a wasteful number, since it uses less digits than its factorization.

16553045444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13840379 (or 13840377 counting only the distinct ones).

The product of its (nonzero) digits is 576000, while the sum is 41.

The spelling of 16553045444 in words is "sixteen billion, five hundred fifty-three million, forty-five thousand, four hundred forty-four".