20321020032 has 32 divisors (see below), whose sum is σ = 53977710480. Its totient is φ = 6773673216.

The previous prime is 20321020003. The next prime is 20321020043. The reversal of 20321020032 is 23002012302.

It is a tau number, because it is divible by the number of its divisors (32).

It is a junction number, because it is equal to n+sod(n) for n = 20321019993 and 20321020020.

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, 26459278 + ... + 26460045.

Almost surely, 2^20321020032 is an apocalyptic number.

It is an amenable number.

20321020032 is an abundant number, since it is smaller than the sum of its proper divisors (33656690448).

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

20321020032 is an equidigital number, since it uses as much as digits as its factorization.

20321020032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52919340 (or 52919328 counting only the distinct ones).

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

Adding to 20321020032 its reverse (23002012302), we get a palindrome (43323032334).

The spelling of 20321020032 in words is "twenty billion, three hundred twenty-one million, twenty thousand, thirty-two".