19868252375916 has 144 divisors (see below), whose sum is σ = 59949204295680. Its totient is φ = 5673888773280.

The previous prime is 19868252375893. The next prime is 19868252375947. The reversal of 19868252375916 is 61957325286891.

19868252375916 is a `hidden beast` number, since 1 + 9 + 8 + 6 + 8 + 2 + 5 + 23 + 7 + 591 + 6 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 10007461 + ... + 11827331.

It is an arithmetic number, because the mean of its divisors is an integer number (416313918720).

Almost surely, 2^{19868252375916} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 19868252375916, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29974602147840).

19868252375916 is an abundant number, since it is smaller than the sum of its proper divisors (40080951919764).

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

19868252375916 is a wasteful number, since it uses less digits than its factorization.

19868252375916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1821961 (or 1821946 counting only the distinct ones).

The product of its digits is 391910400, while the sum is 72.

The spelling of 19868252375916 in words is "nineteen trillion, eight hundred sixty-eight billion, two hundred fifty-two million, three hundred seventy-five thousand, nine hundred sixteen".