20321144032 has 24 divisors (see below), whose sum is σ = 45722574576. Its totient is φ = 8709061632.

The previous prime is 20321144027. The next prime is 20321144093. The reversal of 20321144032 is 23044112302.

It is a junction number, because it is equal to n+sod(n) for n = 20321143994 and 20321144012.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45359473 + ... + 45359920.

It is an arithmetic number, because the mean of its divisors is an integer number (1905107274).

Almost surely, 2^20321144032 is an apocalyptic number.

It is an amenable number.

20321144032 is an abundant number, since it is smaller than the sum of its proper divisors (25401430544).

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

20321144032 is an equidigital number, since it uses as much as digits as its factorization.

20321144032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90719410 (or 90719402 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 20321144032 its reverse (23044112302), we get a palindrome (43365256334).

The spelling of 20321144032 in words is "twenty billion, three hundred twenty-one million, one hundred forty-four thousand, thirty-two".