128998550533104 has 480 divisors, whose sum is σ = 432028076433408. Its totient is φ = 35154895104000.

The previous prime is 128998550533037. The next prime is 128998550533109. The reversal of 128998550533104 is 401335055899821.

128998550533104 is a `hidden beast` number, since 1 + 2 + 8 + 9 + 9 + 85 + 5 + 0 + 533 + 10 + 4 = 666.

128998550533104 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128998550533109) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 9968199274 + ... + 9968212214.

Almost surely, 2^{128998550533104} is an apocalyptic number.

128998550533104 is a gapful number since it is divisible by the number (14) 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 128998550533104, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (216014038216704).

128998550533104 is an abundant number, since it is smaller than the sum of its proper divisors (303029525900304).

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

128998550533104 is a wasteful number, since it uses less digits than its factorization.

128998550533104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17557 (or 17548 counting only the distinct ones).

The product of its (nonzero) digits is 46656000, while the sum is 63.

The spelling of 128998550533104 in words is "one hundred twenty-eight trillion, nine hundred ninety-eight billion, five hundred fifty million, five hundred thirty-three thousand, one hundred four".