128356553386122 has 16 divisors (see below), whose sum is σ = 256744984815840. Its totient is φ = 42780204788112.

The previous prime is 128356553386099. The next prime is 128356553386163. The reversal of 128356553386122 is 221683355653821.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1328199472 + ... + 1328296107.

It is an arithmetic number, because the mean of its divisors is an integer number (16046561550990).

Almost surely, 2^{128356553386122} is an apocalyptic number.

128356553386122 is an abundant number, since it is smaller than the sum of its proper divisors (128388431429718).

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

128356553386122 is a wasteful number, since it uses less digits than its factorization.

128356553386122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2656503637.

The product of its digits is 62208000, while the sum is 60.

The spelling of 128356553386122 in words is "one hundred twenty-eight trillion, three hundred fifty-six billion, five hundred fifty-three million, three hundred eighty-six thousand, one hundred twenty-two".