32021320320 has 384 divisors, whose sum is σ = 122099140800. Its totient is φ = 7667957760.

The previous prime is 32021320313. The next prime is 32021320349. The reversal of 32021320320 is 2302312023.

It is a happy number.

32021320320 is a `hidden beast` number, since 3 + 2 + 0 + 21 + 320 + 320 = 666.

It is a tau number, because it is divible by the number of its divisors (384).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 32021320293 and 32021320302.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 5255836 + ... + 5261924.

Almost surely, 2^32021320320 is an apocalyptic number.

32021320320 is a gapful number since it is divisible by the number (30) 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 32021320320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (61049570400).

32021320320 is an abundant number, since it is smaller than the sum of its proper divisors (90077820480).

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

32021320320 is a wasteful number, since it uses less digits than its factorization.

32021320320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6208 (or 6193 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 18.

Adding to 32021320320 its reverse (2302312023), we get a palindrome (34323632343).

The spelling of 32021320320 in words is "thirty-two billion, twenty-one million, three hundred twenty thousand, three hundred twenty".