128133305628 has 96 divisors (see below), whose sum is σ = 303847165440. Its totient is φ = 42022041600.

The previous prime is 128133305593. The next prime is 128133305633. The reversal of 128133305628 is 826503331821.

It is a happy number.

It is a super-2 number, since 2×128133305628² (a number of 23 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (42) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 128133305628.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 207671176 + ... + 207671792.

It is an arithmetic number, because the mean of its divisors is an integer number (3165074640).

Almost surely, 2^128133305628 is an apocalyptic number.

It is an amenable number.

128133305628 is an abundant number, since it is smaller than the sum of its proper divisors (175713859812).

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

128133305628 is a wasteful number, since it uses less digits than its factorization.

128133305628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1547 (or 1545 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 42.

The spelling of 128133305628 in words is "one hundred twenty-eight billion, one hundred thirty-three million, three hundred five thousand, six hundred twenty-eight".