20322345040000 has 160 divisors (see below), whose sum is σ = 51667626067200. Its totient is φ = 7955980416000.

The previous prime is 20322345039977. The next prime is 20322345040033. The reversal of 20322345040000 is 4054322302.

It is a tau number, because it is divible by the number of its divisors (160).

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

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1057561 + ... + 6462439.

It is an arithmetic number, because the mean of its divisors is an integer number (322922662920).

Almost surely, 2^{20322345040000} is an apocalyptic number.

20322345040000 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 20322345040000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25833813033600).

20322345040000 is an abundant number, since it is smaller than the sum of its proper divisors (31345281027200).

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

20322345040000 is an frugal number, since it uses more digits than its factorization.

20322345040000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5404960 (or 5404933 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 25.

Adding to 20322345040000 its reverse (4054322302), we get a palindrome (20326399362302).

The spelling of 20322345040000 in words is "twenty trillion, three hundred twenty-two billion, three hundred forty-five million, forty thousand".