32551135320 has 128 divisors (see below), whose sum is σ = 107565719040. Its totient is φ = 7814538240.

The previous prime is 32551135307. The next prime is 32551135343. The reversal of 32551135320 is 2353115523.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

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, 16252 + ... + 255668.

It is an arithmetic number, because the mean of its divisors is an integer number (840357180).

Almost surely, 2^32551135320 is an apocalyptic number.

32551135320 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 32551135320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (53782859520).

32551135320 is an abundant number, since it is smaller than the sum of its proper divisors (75014583720).

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

32551135320 is a wasteful number, since it uses less digits than its factorization.

32551135320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 239545 (or 239541 counting only the distinct ones).

The product of its (nonzero) digits is 13500, while the sum is 30.

The spelling of 32551135320 in words is "thirty-two billion, five hundred fifty-one million, one hundred thirty-five thousand, three hundred twenty".