128997848700 has 288 divisors, whose sum is σ = 474425745920. Its totient is φ = 29455488000.

The previous prime is 128997848687. The next prime is 128997848711. The reversal of 128997848700 is 7848799821.

128997848700 is a `hidden beast` number, since 1 + 2 + 89 + 9 + 78 + 487 + 0 + 0 = 666.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 22696059 + ... + 22701741.

Almost surely, 2^128997848700 is an apocalyptic number.

128997848700 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 128997848700, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (237212872960).

128997848700 is an abundant number, since it is smaller than the sum of its proper divisors (345427897220).

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

128997848700 is a wasteful number, since it uses less digits than its factorization.

128997848700 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6914 (or 6901 counting only the distinct ones).

The product of its (nonzero) digits is 16257024, while the sum is 63.

The spelling of 128997848700 in words is "one hundred twenty-eight billion, nine hundred ninety-seven million, eight hundred forty-eight thousand, seven hundred".