19897903106752 has 112 divisors (see below), whose sum is σ = 44783690976000. Its totient is φ = 8688737756160.

The previous prime is 19897903106737. The next prime is 19897903106789. The reversal of 19897903106752 is 25760130979891.

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 15 ways as a sum of consecutive naturals, for example, 1613983 + ... + 6511585.

Almost surely, 2^{19897903106752} 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 19897903106752, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22391845488000).

19897903106752 is an abundant number, since it is smaller than the sum of its proper divisors (24885787869248).

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

19897903106752 is a wasteful number, since it uses less digits than its factorization.

19897903106752 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4897854 (or 4897844 counting only the distinct ones).

The product of its (nonzero) digits is 51438240, while the sum is 67.

The spelling of 19897903106752 in words is "nineteen trillion, eight hundred ninety-seven billion, nine hundred three million, one hundred six thousand, seven hundred fifty-two".