988221358080 has 720 divisors, whose sum is σ = 3876431517504. Its totient is φ = 239515729920.

The previous prime is 988221358079. The next prime is 988221358081. The reversal of 988221358080 is 80853122889.

It is an interprime number because it is at equal distance from previous prime (988221358079) and next prime (988221358081).

It is a tau number, because it is divible by the number of its divisors (720).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (988221358081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 218969904 + ... + 218974416.

Almost surely, 2^988221358080 is an apocalyptic number.

988221358080 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 988221358080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1938215758752).

988221358080 is an abundant number, since it is smaller than the sum of its proper divisors (2888210159424).

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

988221358080 is an equidigital number, since it uses as much as digits as its factorization.

988221358080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4572 (or 4534 counting only the distinct ones).

The product of its (nonzero) digits is 2211840, while the sum is 54.

The spelling of 988221358080 in words is "nine hundred eighty-eight billion, two hundred twenty-one million, three hundred fifty-eight thousand, eighty".