16168943544 has 64 divisors (see below), whose sum is σ = 44936048640. Its totient is φ = 4814570880.

The previous prime is 16168943519. The next prime is 16168943561. The reversal of 16168943544 is 44534986161.

It is a happy number.

It is a super-2 number, since 2×16168943544² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 826192 + ... + 845535.

It is an arithmetic number, because the mean of its divisors is an integer number (702125760).

Almost surely, 2^16168943544 is an apocalyptic number.

It is an amenable number.

16168943544 is an abundant number, since it is smaller than the sum of its proper divisors (28767105096).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

16168943544 is a wasteful number, since it uses less digits than its factorization.

16168943544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1671780 (or 1671776 counting only the distinct ones).

The product of its digits is 2488320, while the sum is 51.

The spelling of 16168943544 in words is "sixteen billion, one hundred sixty-eight million, nine hundred forty-three thousand, five hundred forty-four".