19042878055 has 16 divisors (see below), whose sum is σ = 23244796800. Its totient is φ = 14972208160.

The previous prime is 19042878013. The next prime is 19042878089. The reversal of 19042878055 is 55087824091.

It is a happy number.

It is not a de Polignac number, because 19042878055 - 2²¹ = 19040780903 is a prime.

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 in 15 ways as a sum of consecutive naturals, for example, 1767876 + ... + 1778614.

It is an arithmetic number, because the mean of its divisors is an integer number (1452799800).

Almost surely, 2^19042878055 is an apocalyptic number.

19042878055 is a deficient number, since it is larger than the sum of its proper divisors (4201918745).

19042878055 is a wasteful number, since it uses less digits than its factorization.

19042878055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16814.

The product of its (nonzero) digits is 806400, while the sum is 49.

The spelling of 19042878055 in words is "nineteen billion, forty-two million, eight hundred seventy-eight thousand, fifty-five".