128343939541488 has 120 divisors (see below), whose sum is σ = 400174914237696. Its totient is φ = 38064611318400.

The previous prime is 128343939541459. The next prime is 128343939541507. The reversal of 128343939541488 is 884145939343821.

128343939541488 is a `hidden beast` number, since 1 + 2 + 8 + 3 + 4 + 3 + 9 + 39 + 541 + 48 + 8 = 666.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 861895918 + ... + 862044813.

Almost surely, 2^{128343939541488} is an apocalyptic number.

128343939541488 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

128343939541488 is an abundant number, since it is smaller than the sum of its proper divisors (271830974696208).

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

128343939541488 is a wasteful number, since it uses less digits than its factorization.

128343939541488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1723940803 (or 1723940794 counting only the distinct ones).

The product of its digits is 716636160, while the sum is 72.

The spelling of 128343939541488 in words is "one hundred twenty-eight trillion, three hundred forty-three billion, nine hundred thirty-nine million, five hundred forty-one thousand, four hundred eighty-eight".