128987176982560 has 192 divisors, whose sum is σ = 333575462304000. Its totient is φ = 46842129838080.

The previous prime is 128987176982527. The next prime is 128987176982561. The reversal of 128987176982560 is 65289671789821.

It is not an unprimeable number, because it can be changed into a prime (128987176982561) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2773954191 + ... + 2774000689.

It is an arithmetic number, because the mean of its divisors is an integer number (1737372199500).

Almost surely, 2^{128987176982560} is an apocalyptic number.

128987176982560 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 128987176982560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (166787731152000).

128987176982560 is an abundant number, since it is smaller than the sum of its proper divisors (204588285321440).

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

128987176982560 is a wasteful number, since it uses less digits than its factorization.

128987176982560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68451 (or 68443 counting only the distinct ones).

The product of its (nonzero) digits is 1463132160, while the sum is 79.

The spelling of 128987176982560 in words is "one hundred twenty-eight trillion, nine hundred eighty-seven billion, one hundred seventy-six million, nine hundred eighty-two thousand, five hundred sixty".