128839455360 has 2304 divisors, whose sum is σ = 617111913600. Its totient is φ = 25360957440.

The previous prime is 128839455337. The next prime is 128839455377. The reversal of 128839455360 is 63554938821.

128839455360 is a `hidden beast` number, since 1 + 2 + 8 + 83 + 9 + 4 + 553 + 6 + 0 = 666.

It is a super-2 number, since 2×128839455360² (a number of 23 digits) contains 22 as substring.

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

It is a junction number, because it is equal to n+sod(n) for n = 128839455297 and 128839455306.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 287 ways as a sum of consecutive naturals, for example, 2430933094 + ... + 2430933146.

Almost surely, 2^128839455360 is an apocalyptic number.

128839455360 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 128839455360, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (308555956800).

128839455360 is an abundant number, since it is smaller than the sum of its proper divisors (488272458240).

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

128839455360 is a wasteful number, since it uses less digits than its factorization.

128839455360 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141 (or 110 counting only the distinct ones).

The product of its (nonzero) digits is 6220800, while the sum is 54.

The spelling of 128839455360 in words is "one hundred twenty-eight billion, eight hundred thirty-nine million, four hundred fifty-five thousand, three hundred sixty".