128707890045 has 128 divisors (see below), whose sum is σ = 246701998080. Its totient is φ = 56058240000.

The previous prime is 128707890043. The next prime is 128707890053. The reversal of 128707890045 is 540098707821.

It is not a de Polignac number, because 128707890045 - 2¹ = 128707890043 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 128707890045.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128707890043) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 132551410 + ... + 132552380.

It is an arithmetic number, because the mean of its divisors is an integer number (1927359360).

Almost surely, 2^128707890045 is an apocalyptic number.

128707890045 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

128707890045 is a deficient number, since it is larger than the sum of its proper divisors (117994108035).

128707890045 is a wasteful number, since it uses less digits than its factorization.

128707890045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1547.

The product of its (nonzero) digits is 1128960, while the sum is 51.

The spelling of 128707890045 in words is "one hundred twenty-eight billion, seven hundred seven million, eight hundred ninety thousand, forty-five".