988954091520 has 224 divisors, whose sum is σ = 3250000823328. Its totient is φ = 256592314368.

The previous prime is 988954091509. The next prime is 988954091539. The reversal of 988954091520 is 25190459889.

It is a Harshad number since it is a multiple of its sum of digits (60).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4437802 + ... + 4655318.

It is an arithmetic number, because the mean of its divisors is an integer number (14508932247).

Almost surely, 2^988954091520 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 988954091520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1625000411664).

988954091520 is an abundant number, since it is smaller than the sum of its proper divisors (2261046731808).

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

988954091520 is a wasteful number, since it uses less digits than its factorization.

988954091520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 217588 (or 217564 counting only the distinct ones).

The product of its (nonzero) digits is 9331200, while the sum is 60.

The spelling of 988954091520 in words is "nine hundred eighty-eight billion, nine hundred fifty-four million, ninety-one thousand, five hundred twenty".