128535684632 has 16 divisors (see below), whose sum is σ = 241106091000. Its totient is φ = 64240727040.

The previous prime is 128535684593. The next prime is 128535684643. The reversal of 128535684632 is 236486535821.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3369257 + ... + 3407192.

Almost surely, 2^128535684632 is an apocalyptic number.

It is an amenable number.

128535684632 is a deficient number, since it is larger than the sum of its proper divisors (112570406368).

128535684632 is a wasteful number, since it uses less digits than its factorization.

128535684632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6778826 (or 6778822 counting only the distinct ones).

The product of its digits is 8294400, while the sum is 53.

The spelling of 128535684632 in words is "one hundred twenty-eight billion, five hundred thirty-five million, six hundred eighty-four thousand, six hundred thirty-two".