128120465435 has 16 divisors (see below), whose sum is σ = 154582024800. Its totient is φ = 101939026176.

The previous prime is 128120465419. The next prime is 128120465489. The reversal of 128120465435 is 534564021821.

It is a cyclic number.

It is not a de Polignac number, because 128120465435 - 2⁴ = 128120465419 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 128120465392 and 128120465401.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1013156 + ... + 1132574.

It is an arithmetic number, because the mean of its divisors is an integer number (9661376550).

Almost surely, 2^128120465435 is an apocalyptic number.

128120465435 is a deficient number, since it is larger than the sum of its proper divisors (26461559365).

128120465435 is a wasteful number, since it uses less digits than its factorization.

128120465435 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120590.

The product of its (nonzero) digits is 230400, while the sum is 41.

The spelling of 128120465435 in words is "one hundred twenty-eight billion, one hundred twenty million, four hundred sixty-five thousand, four hundred thirty-five".