128023563432 has 32 divisors (see below), whose sum is σ = 320069270880. Its totient is φ = 42673139520.

The previous prime is 128023563427. The next prime is 128023563469. The reversal of 128023563432 is 234365320821.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 900582 + ... + 1033002.

It is an arithmetic number, because the mean of its divisors is an integer number (10002164715).

Almost surely, 2^128023563432 is an apocalyptic number.

128023563432 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

128023563432 is an abundant number, since it is smaller than the sum of its proper divisors (192045707448).

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

128023563432 is a wasteful number, since it uses less digits than its factorization.

128023563432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172713 (or 172709 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 39.

The spelling of 128023563432 in words is "one hundred twenty-eight billion, twenty-three million, five hundred sixty-three thousand, four hundred thirty-two".