32131386616 has 64 divisors (see below), whose sum is σ = 70338744000. Its totient is φ = 13754797056.

The previous prime is 32131386593. The next prime is 32131386619. The reversal of 32131386616 is 61668313123.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (32131386619) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2564880 + ... + 2577376.

It is an arithmetic number, because the mean of its divisors is an integer number (1099042875).

Almost surely, 2^32131386616 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 32131386616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35169372000).

32131386616 is an abundant number, since it is smaller than the sum of its proper divisors (38207357384).

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

32131386616 is a wasteful number, since it uses less digits than its factorization.

32131386616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13461 (or 13443 counting only the distinct ones).

The product of its digits is 93312, while the sum is 40.

Adding to 32131386616 its reverse (61668313123), we get a palindrome (93799699739).

The spelling of 32131386616 in words is "thirty-two billion, one hundred thirty-one million, three hundred eighty-six thousand, six hundred sixteen".