32198378388 has 96 divisors (see below), whose sum is σ = 82708674048. Its totient is φ = 9668131200.

The previous prime is 32198378353. The next prime is 32198378389. The reversal of 32198378388 is 88387389123.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (32198378389) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 19314331 + ... + 19315997.

It is an arithmetic number, because the mean of its divisors is an integer number (861548688).

Almost surely, 2^32198378388 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 32198378388, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41354337024).

32198378388 is an abundant number, since it is smaller than the sum of its proper divisors (50510295660).

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

32198378388 is a wasteful number, since it uses less digits than its factorization.

32198378388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2933 (or 2931 counting only the distinct ones).

The product of its digits is 13934592, while the sum is 60.

The spelling of 32198378388 in words is "thirty-two billion, one hundred ninety-eight million, three hundred seventy-eight thousand, three hundred eighty-eight".