128044133288879 has 16 divisors (see below), whose sum is σ = 135458711232000. Its totient is φ = 120697776272160.

The previous prime is 128044133288821. The next prime is 128044133288899. The reversal of 128044133288879 is 978882331440821.

It is a happy number.

It is not a de Polignac number, because 128044133288879 - 2¹⁶ = 128044133223343 is a prime.

It is a super-2 number, since 2×128044133288879² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128044133288899) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2655107 + ... + 16221524.

It is an arithmetic number, because the mean of its divisors is an integer number (8466169452000).

Almost surely, 2^{128044133288879} is an apocalyptic number.

128044133288879 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

128044133288879 is a deficient number, since it is larger than the sum of its proper divisors (7414577943121).

128044133288879 is a wasteful number, since it uses less digits than its factorization.

128044133288879 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18878438.

The product of its (nonzero) digits is 148635648, while the sum is 68.

The spelling of 128044133288879 in words is "one hundred twenty-eight trillion, forty-four billion, one hundred thirty-three million, two hundred eighty-eight thousand, eight hundred seventy-nine".