19912032000 has 1296 divisors, whose sum is σ = 89313168672. Its totient is φ = 4231987200.

The previous prime is 19912031987. The next prime is 19912032067. The reversal of 19912032000 is 23021991.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 239903959 + ... + 239904041.

It is an arithmetic number, because the mean of its divisors is an integer number (68914482).

Almost surely, 2^19912032000 is an apocalyptic number.

19912032000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 19912032000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (44656584336).

19912032000 is an abundant number, since it is smaller than the sum of its proper divisors (69401136672).

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

19912032000 is a wasteful number, since it uses less digits than its factorization.

19912032000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151 (or 117 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 27.

Adding to 19912032000 its reverse (23021991), we get a palindrome (19935053991).

The spelling of 19912032000 in words is "nineteen billion, nine hundred twelve million, thirty-two thousand".