19728016355 has 16 divisors (see below), whose sum is σ = 23855420160. Its totient is φ = 15661629312.

The previous prime is 19728016339. The next prime is 19728016361. The reversal of 19728016355 is 55361082791.

It is a cyclic number.

It is not a de Polignac number, because 19728016355 - 2⁴ = 19728016339 is a prime.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 357422 + ... + 408908.

It is an arithmetic number, because the mean of its divisors is an integer number (1490963760).

Almost surely, 2^19728016355 is an apocalyptic number.

19728016355 is a deficient number, since it is larger than the sum of its proper divisors (4127403805).

19728016355 is a wasteful number, since it uses less digits than its factorization.

19728016355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52078.

The product of its (nonzero) digits is 453600, while the sum is 47.

The spelling of 19728016355 in words is "nineteen billion, seven hundred twenty-eight million, sixteen thousand, three hundred fifty-five".