32121506508 has 96 divisors (see below), whose sum is σ = 92684229120. Its totient is φ = 8431395840.

The previous prime is 32121506489. The next prime is 32121506509. The reversal of 32121506508 is 80560512123.

It is not an unprimeable number, because it can be changed into a prime (32121506509) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 160708 + ... + 300116.

It is an arithmetic number, because the mean of its divisors is an integer number (965460720).

Almost surely, 2^32121506508 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 32121506508, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (46342114560).

32121506508 is an abundant number, since it is smaller than the sum of its proper divisors (60562722612).

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

32121506508 is a wasteful number, since it uses less digits than its factorization.

32121506508 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139647 (or 139645 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 33.

The spelling of 32121506508 in words is "thirty-two billion, one hundred twenty-one million, five hundred six thousand, five hundred eight".