19836640125036 has 576 divisors, whose sum is σ = 60975079925760. Its totient is φ = 5315768156160.

The previous prime is 19836640124989. The next prime is 19836640125053. The reversal of 19836640125036 is 63052104663891.

19836640125036 is a `hidden beast` number, since 1 + 9 + 83 + 6 + 6 + 40 + 12 + 503 + 6 = 666.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 48500342400 + ... + 48500342808.

It is an arithmetic number, because the mean of its divisors is an integer number (105859513760).

Almost surely, 2^{19836640125036} 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 19836640125036, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30487539962880).

19836640125036 is an abundant number, since it is smaller than the sum of its proper divisors (41138439800724).

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

19836640125036 is a wasteful number, since it uses less digits than its factorization.

19836640125036 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1134 (or 1129 counting only the distinct ones).

The product of its (nonzero) digits is 5598720, while the sum is 54.

The spelling of 19836640125036 in words is "nineteen trillion, eight hundred thirty-six billion, six hundred forty million, one hundred twenty-five thousand, thirty-six".