128916540129 has 8 divisors (see below), whose sum is σ = 185110929472. Its totient is φ = 79333255440.

The previous prime is 128916540119. The next prime is 128916540187. The reversal of 128916540129 is 921045619821.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 128916540129 - 2⁷ = 128916540001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (128916540119) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1652776117 + ... + 1652776194.

It is an arithmetic number, because the mean of its divisors is an integer number (23138866184).

Almost surely, 2^128916540129 is an apocalyptic number.

It is an amenable number.

128916540129 is a deficient number, since it is larger than the sum of its proper divisors (56194389343).

128916540129 is a wasteful number, since it uses less digits than its factorization.

128916540129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3305552327.

The product of its (nonzero) digits is 311040, while the sum is 48.

The spelling of 128916540129 in words is "one hundred twenty-eight billion, nine hundred sixteen million, five hundred forty thousand, one hundred twenty-nine".