19163328255 has 48 divisors (see below), whose sum is σ = 35050242240. Its totient is φ = 9666184704.

The previous prime is 19163328241. The next prime is 19163328257. The reversal of 19163328255 is 55282336191.

19163328255 is a `hidden beast` number, since 1 + 9 + 1 + 633 + 2 + 8 + 2 + 5 + 5 = 666.

It is not a de Polignac number, because 19163328255 - 2¹³ = 19163320063 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 19163328255.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19163328257) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 11904 + ... + 196133.

It is an arithmetic number, because the mean of its divisors is an integer number (730213380).

Almost surely, 2^19163328255 is an apocalyptic number.

19163328255 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

19163328255 is a deficient number, since it is larger than the sum of its proper divisors (15886913985).

19163328255 is a wasteful number, since it uses less digits than its factorization.

19163328255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 208160 (or 208157 counting only the distinct ones).

The product of its digits is 388800, while the sum is 45.

The spelling of 19163328255 in words is "nineteen billion, one hundred sixty-three million, three hundred twenty-eight thousand, two hundred fifty-five".