128277852035478 has 16 divisors (see below), whose sum is σ = 267710299900416. Its totient is φ = 40900184706920.

The previous prime is 128277852035453. The next prime is 128277852035563. The reversal of 128277852035478 is 874530258772821.

128277852035478 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (69) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Harshad number since it is a multiple of its sum of digits (69).

It is a congruent number.

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, 464774826078 + ... + 464774826353.

It is an arithmetic number, because the mean of its divisors is an integer number (16731893743776).

Almost surely, 2^{128277852035478} is an apocalyptic number.

128277852035478 is an abundant number, since it is smaller than the sum of its proper divisors (139432447864938).

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

128277852035478 is a wasteful number, since it uses less digits than its factorization.

128277852035478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 929549652459.

The product of its (nonzero) digits is 421478400, while the sum is 69.

The spelling of 128277852035478 in words is "one hundred twenty-eight trillion, two hundred seventy-seven billion, eight hundred fifty-two million, thirty-five thousand, four hundred seventy-eight".