128902778788 has 24 divisors (see below), whose sum is σ = 262031881664. Its totient is φ = 54338407200.

The previous prime is 128902778773. The next prime is 128902778791. The reversal of 128902778788 is 887877209821.

128902778788 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 37733298 + ... + 37736713.

Almost surely, 2^128902778788 is an apocalyptic number.

It is an amenable number.

128902778788 is an abundant number, since it is smaller than the sum of its proper divisors (133129102876).

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

128902778788 is a wasteful number, since it uses less digits than its factorization.

128902778788 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75470083 (or 75470081 counting only the distinct ones).

The product of its (nonzero) digits is 50577408, while the sum is 67.

The spelling of 128902778788 in words is "one hundred twenty-eight billion, nine hundred two million, seven hundred seventy-eight thousand, seven hundred eighty-eight".