32689232640 has 288 divisors, whose sum is σ = 116262720000. Its totient is φ = 8697507840.

The previous prime is 32689232633. The next prime is 32689232711. The reversal of 32689232640 is 4623298623.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (288).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 21806611 + ... + 21808109.

It is an arithmetic number, because the mean of its divisors is an integer number (403690000).

Almost surely, 2^32689232640 is an apocalyptic number.

32689232640 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 32689232640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (58131360000).

32689232640 is an abundant number, since it is smaller than the sum of its proper divisors (83573487360).

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

32689232640 is a wasteful number, since it uses less digits than its factorization.

32689232640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2160 (or 2140 counting only the distinct ones).

The product of its (nonzero) digits is 746496, while the sum is 45.

The spelling of 32689232640 in words is "thirty-two billion, six hundred eighty-nine million, two hundred thirty-two thousand, six hundred forty".