16378663544 has 8 divisors (see below), whose sum is σ = 30709994160. Its totient is φ = 8189331768.

The previous prime is 16378663523. The next prime is 16378663573. The reversal of 16378663544 is 44536687361.

16378663544 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

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, 1023666464 + ... + 1023666479.

It is an arithmetic number, because the mean of its divisors is an integer number (3838749270).

Almost surely, 2^16378663544 is an apocalyptic number.

It is an amenable number.

16378663544 is a deficient number, since it is larger than the sum of its proper divisors (14331330616).

16378663544 is a wasteful number, since it uses less digits than its factorization.

16378663544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2047332949 (or 2047332945 counting only the distinct ones).

The product of its digits is 8709120, while the sum is 53.

The spelling of 16378663544 in words is "sixteen billion, three hundred seventy-eight million, six hundred sixty-three thousand, five hundred forty-four".