128874988455 has 8 divisors (see below), whose sum is σ = 206199981552. Its totient is φ = 68733327168.

The previous prime is 128874988453. The next prime is 128874988481. The reversal of 128874988455 is 554889478821.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 128874988455 - 2¹ = 128874988453 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 128874988455.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128874988453) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4295832934 + ... + 4295832963.

It is an arithmetic number, because the mean of its divisors is an integer number (25774997694).

Almost surely, 2^128874988455 is an apocalyptic number.

128874988455 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

128874988455 is a deficient number, since it is larger than the sum of its proper divisors (77324993097).

128874988455 is an equidigital number, since it uses as much as digits as its factorization.

128874988455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8591665905.

The product of its digits is 206438400, while the sum is 69.

The spelling of 128874988455 in words is "one hundred twenty-eight billion, eight hundred seventy-four million, nine hundred eighty-eight thousand, four hundred fifty-five".