19800102072128 has 112 divisors (see below), whose sum is σ = 47624277160704. Its totient is φ = 7983749283840.

The previous prime is 19800102072109. The next prime is 19800102072131. The reversal of 19800102072128 is 82127020100891.

It is a tau number, because it is divible by the number of its divisors (112).

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, 15122225 + ... + 16379312.

Almost surely, 2^{19800102072128} is an apocalyptic number.

It is an amenable number.

19800102072128 is an abundant number, since it is smaller than the sum of its proper divisors (27824175088576).

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

19800102072128 is a wasteful number, since it uses less digits than its factorization.

19800102072128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31501640 (or 31501630 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 41.

The spelling of 19800102072128 in words is "nineteen trillion, eight hundred billion, one hundred two million, seventy-two thousand, one hundred twenty-eight".