20452151320000 has 140 divisors (see below), whose sum is σ = 50719355767080. Its totient is φ = 8180107648000.

The previous prime is 20452151319983. The next prime is 20452151320009. The reversal of 20452151320000 is 2315125402.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20452151320009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 681064986 + ... + 681095014.

It is an arithmetic number, because the mean of its divisors is an integer number (362281112622).

Almost surely, 2^{20452151320000} is an apocalyptic number.

20452151320000 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 20452151320000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25359677883540).

20452151320000 is an abundant number, since it is smaller than the sum of its proper divisors (30267204447080).

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

20452151320000 is an equidigital number, since it uses as much as digits as its factorization.

20452151320000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47088 (or 47063 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 25.

Adding to 20452151320000 its reverse (2315125402), we get a palindrome (20454466445402).

The spelling of 20452151320000 in words is "twenty trillion, four hundred fifty-two billion, one hundred fifty-one million, three hundred twenty thousand".