32012273172 has 96 divisors (see below), whose sum is σ = 85210030080. Its totient is φ = 9259127680.

The previous prime is 32012273089. The next prime is 32012273221. The reversal of 32012273172 is 27137221023.

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, 1443238 + ... + 1465250.

It is an arithmetic number, because the mean of its divisors is an integer number (887604480).

Almost surely, 2^32012273172 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 32012273172, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42605015040).

32012273172 is an abundant number, since it is smaller than the sum of its proper divisors (53197756908).

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

32012273172 is a wasteful number, since it uses less digits than its factorization.

32012273172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22533 (or 22531 counting only the distinct ones).

The product of its (nonzero) digits is 7056, while the sum is 30.

Adding to 32012273172 its reverse (27137221023), we get a palindrome (59149494195).

The spelling of 32012273172 in words is "thirty-two billion, twelve million, two hundred seventy-three thousand, one hundred seventy-two".