19678425635 has 16 divisors (see below), whose sum is σ = 25997194080. Its totient is φ = 14180279040.

The previous prime is 19678425623. The next prime is 19678425643. The reversal of 19678425635 is 53652487691.

It is not a de Polignac number, because 19678425635 - 2²⁸ = 19409990179 is a prime.

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, 1635242 + ... + 1647231.

It is an arithmetic number, because the mean of its divisors is an integer number (1624824630).

Almost surely, 2^19678425635 is an apocalyptic number.

19678425635 is a deficient number, since it is larger than the sum of its proper divisors (6318768445).

19678425635 is a wasteful number, since it uses less digits than its factorization.

19678425635 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3282598.

The product of its digits is 10886400, while the sum is 56.

The spelling of 19678425635 in words is "nineteen billion, six hundred seventy-eight million, four hundred twenty-five thousand, six hundred thirty-five".