128705543024 has 20 divisors (see below), whose sum is σ = 249394260960. Its totient is φ = 64345733760.

The previous prime is 128705542997. The next prime is 128705543051. The reversal of 128705543024 is 420345507821.

It is an interprime number because it is at equal distance from previous prime (128705542997) and next prime (128705543051).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 287384 + ... + 583095.

It is an arithmetic number, because the mean of its divisors is an integer number (12469713048).

Almost surely, 2^128705543024 is an apocalyptic number.

It is an amenable number.

128705543024 is a deficient number, since it is larger than the sum of its proper divisors (120688717936).

128705543024 is an equidigital number, since it uses as much as digits as its factorization.

128705543024 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 879728 (or 879722 counting only the distinct ones).

The product of its (nonzero) digits is 268800, while the sum is 41.

The spelling of 128705543024 in words is "one hundred twenty-eight billion, seven hundred five million, five hundred forty-three thousand, twenty-four".