128003652000 has 672 divisors, whose sum is σ = 538990792704. Its totient is φ = 29253312000.

The previous prime is 128003651999. The next prime is 128003652011. The reversal of 128003652000 is 256300821.

128003652000 is a `hidden beast` number, since 1 + 2 + 8 + 0 + 0 + 3 + 652 + 0 + 0 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (672).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 111 ways as a sum of consecutive naturals, for example, 20408865 + ... + 20415135.

It is an arithmetic number, because the mean of its divisors is an integer number (802069632).

Almost surely, 2^128003652000 is an apocalyptic number.

128003652000 is a gapful number since it is divisible by the number (10) 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 128003652000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (269495396352).

128003652000 is an abundant number, since it is smaller than the sum of its proper divisors (410987140704).

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

128003652000 is an frugal number, since it uses more digits than its factorization.

128003652000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6321 (or 6288 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

Adding to 128003652000 its reverse (256300821), we get a palindrome (128259952821).

The spelling of 128003652000 in words is "one hundred twenty-eight billion, three million, six hundred fifty-two thousand".