19642842042648 has 32 divisors (see below), whose sum is σ = 53571387389760. Its totient is φ = 5952376376480.

The previous prime is 19642842042643. The next prime is 19642842042667. The reversal of 19642842042648 is 84624024824691.

It is a junction number, because it is equal to n+sod(n) for n = 19642842042591 and 19642842042600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19642842042643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37202352090 + ... + 37202352617.

It is an arithmetic number, because the mean of its divisors is an integer number (1674105855930).

Almost surely, 2^{19642842042648} is an apocalyptic number.

It is an amenable number.

19642842042648 is an abundant number, since it is smaller than the sum of its proper divisors (33928545347112).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

19642842042648 is a wasteful number, since it uses less digits than its factorization.

19642842042648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74404704727 (or 74404704723 counting only the distinct ones).

The product of its (nonzero) digits is 42467328, while the sum is 60.

The spelling of 19642842042648 in words is "nineteen trillion, six hundred forty-two billion, eight hundred forty-two million, forty-two thousand, six hundred forty-eight".