128706373040 has 80 divisors (see below), whose sum is σ = 362108377152. Its totient is φ = 41532137472.

The previous prime is 128706373039. The next prime is 128706373069. The reversal of 128706373040 is 40373607821.

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-2 number, since 2×128706373040² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6750269 + ... + 6769308.

Almost surely, 2^128706373040 is an apocalyptic number.

128706373040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

128706373040 is an abundant number, since it is smaller than the sum of its proper divisors (233402004112).

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

128706373040 is a wasteful number, since it uses less digits than its factorization.

128706373040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13519614 (or 13519608 counting only the distinct ones).

The product of its (nonzero) digits is 169344, while the sum is 41.

The spelling of 128706373040 in words is "one hundred twenty-eight billion, seven hundred six million, three hundred seventy-three thousand, forty".