19873947067484 has 48 divisors (see below), whose sum is σ = 38461512979008. Its totient is φ = 8937632191488.

The previous prime is 19873947067423. The next prime is 19873947067537. The reversal of 19873947067484 is 48476074937891.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4103507 + ... + 7522410.

It is an arithmetic number, because the mean of its divisors is an integer number (801281520396).

Almost surely, 2^{19873947067484} is an apocalyptic number.

It is an amenable number.

19873947067484 is a deficient number, since it is larger than the sum of its proper divisors (18587565911524).

19873947067484 is a wasteful number, since it uses less digits than its factorization.

19873947067484 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11627054 (or 11627052 counting only the distinct ones).

The product of its (nonzero) digits is 2048385024, while the sum is 77.

The spelling of 19873947067484 in words is "nineteen trillion, eight hundred seventy-three billion, nine hundred forty-seven million, sixty-seven thousand, four hundred eighty-four".