32420665332 has 72 divisors (see below), whose sum is σ = 89451546912. Its totient is φ = 9819048000.

The previous prime is 32420665307. The next prime is 32420665339. The reversal of 32420665332 is 23356602423.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (32420665339) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 731263 + ... + 774329.

It is an arithmetic number, because the mean of its divisors is an integer number (1242382596).

Almost surely, 2^32420665332 is an apocalyptic number.

It is an amenable number.

32420665332 is an abundant number, since it is smaller than the sum of its proper divisors (57030881580).

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

32420665332 is a wasteful number, since it uses less digits than its factorization.

32420665332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44989 (or 44984 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 36.

The spelling of 32420665332 in words is "thirty-two billion, four hundred twenty million, six hundred sixty-five thousand, three hundred thirty-two".