20321343233040 has 40 divisors (see below), whose sum is σ = 62996164023168. Its totient is φ = 5419024862080.

The previous prime is 20321343233029. The next prime is 20321343233041. The reversal of 20321343233040 is 4033234312302.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 20321343232989 and 20321343233007.

It is not an unprimeable number, because it can be changed into a prime (20321343233041) 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 7 ways as a sum of consecutive naturals, for example, 42336131496 + ... + 42336131975.

Almost surely, 2^{20321343233040} is an apocalyptic number.

20321343233040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20321343233040 is an abundant number, since it is smaller than the sum of its proper divisors (42674820790128).

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

20321343233040 is a wasteful number, since it uses less digits than its factorization.

20321343233040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84672263487 (or 84672263481 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 30.

Adding to 20321343233040 its reverse (4033234312302), we get a palindrome (24354577545342).

The spelling of 20321343233040 in words is "twenty trillion, three hundred twenty-one billion, three hundred forty-three million, two hundred thirty-three thousand, forty".