3216659371128 has 320 divisors, whose sum is σ = 10388265465600. Its totient is φ = 910891837440.

The previous prime is 3216659371117. The next prime is 3216659371147. The reversal of 3216659371128 is 8211739566123.

It is a happy number.

3216659371128 is a `hidden beast` number, since 3 + 2 + 16 + 6 + 593 + 7 + 11 + 28 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 552023751 + ... + 552029577.

It is an arithmetic number, because the mean of its divisors is an integer number (32463329580).

Almost surely, 2^{3216659371128} 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 3216659371128, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5194132732800).

3216659371128 is an abundant number, since it is smaller than the sum of its proper divisors (7171606094472).

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

3216659371128 is a wasteful number, since it uses less digits than its factorization.

3216659371128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6912 (or 6899 counting only the distinct ones).

The product of its digits is 3265920, while the sum is 54.

The spelling of 3216659371128 in words is "three trillion, two hundred sixteen billion, six hundred fifty-nine million, three hundred seventy-one thousand, one hundred twenty-eight".