20120320032000 has 288 divisors, whose sum is σ = 67925230673664. Its totient is φ = 5277459456000.

The previous prime is 20120320031923. The next prime is 20120320032011. The reversal of 20120320032000 is 23002302102.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4138077 + ... + 7573923.

Almost surely, 2^{20120320032000} is an apocalyptic number.

20120320032000 is a gapful number since it is divisible by the number (20) 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 20120320032000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33962615336832).

20120320032000 is an abundant number, since it is smaller than the sum of its proper divisors (47804910641664).

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

20120320032000 is an equidigital number, since it uses as much as digits as its factorization.

20120320032000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3435942 (or 3435918 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 15.

Adding to 20120320032000 its reverse (23002302102), we get a palindrome (20143322334102).

The spelling of 20120320032000 in words is "twenty trillion, one hundred twenty billion, three hundred twenty million, thirty-two thousand".