128941563768 has 16 divisors (see below), whose sum is σ = 322353909480. Its totient is φ = 42980521248.

The previous prime is 128941563761. The next prime is 128941563799. The reversal of 128941563768 is 867365149821.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128941563761) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2686282555 + ... + 2686282602.

Almost surely, 2^128941563768 is an apocalyptic number.

It is an amenable number.

128941563768 is an abundant number, since it is smaller than the sum of its proper divisors (193412345712).

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

128941563768 is a wasteful number, since it uses less digits than its factorization.

128941563768 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5372565166 (or 5372565162 counting only the distinct ones).

The product of its digits is 17418240, while the sum is 60.

The spelling of 128941563768 in words is "one hundred twenty-eight billion, nine hundred forty-one million, five hundred sixty-three thousand, seven hundred sixty-eight".