3217889937990 has 128 divisors (see below), whose sum is σ = 9507278914560. Its totient is φ = 678787481088.

The previous prime is 3217889937989. The next prime is 3217889938001. The reversal of 3217889937990 is 997399887123.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 12283696 + ... + 12542924.

It is an arithmetic number, because the mean of its divisors is an integer number (74275616520).

Almost surely, 2^{3217889937990} is an apocalyptic number.

3217889937990 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 3217889937990, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4753639457280).

3217889937990 is an abundant number, since it is smaller than the sum of its proper divisors (6289388976570).

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

3217889937990 is a wasteful number, since it uses less digits than its factorization.

3217889937990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 263806.

The product of its (nonzero) digits is 370355328, while the sum is 75.

The spelling of 3217889937990 in words is "three trillion, two hundred seventeen billion, eight hundred eighty-nine million, nine hundred thirty-seven thousand, nine hundred ninety".