128579481172 has 12 divisors (see below), whose sum is σ = 225024700180. Its totient is φ = 64286709696.

The previous prime is 128579481161. The next prime is 128579481197. The reversal of 128579481172 is 271184975821.

It can be written as a sum of positive squares in 2 ways, for example, as 16036676496 + 112542804676 = 126636^2 + 335474^2 .

It is a super-3 number, since 3×128579481172³ (a number of 34 digits) contains 333 as substring.

It is a hoax number, since the sum of its digits (55) coincides with the sum of the digits of its distinct prime factors.

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, 660897 + ... + 833032.

Almost surely, 2^128579481172 is an apocalyptic number.

It is an amenable number.

128579481172 is a deficient number, since it is larger than the sum of its proper divisors (96445219008).

128579481172 is a wasteful number, since it uses less digits than its factorization.

128579481172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1515450 (or 1515448 counting only the distinct ones).

The product of its digits is 2257920, while the sum is 55.

The spelling of 128579481172 in words is "one hundred twenty-eight billion, five hundred seventy-nine million, four hundred eighty-one thousand, one hundred seventy-two".