128532140520 has 128 divisors (see below), whose sum is σ = 442965507840. Its totient is φ = 29226516480.

The previous prime is 128532140489. The next prime is 128532140623. The reversal of 128532140520 is 25041235821.

It is a super-2 number, since 2×128532140520² (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 31 ways as a sum of consecutive naturals, for example, 234291 + ... + 558530.

It is an arithmetic number, because the mean of its divisors is an integer number (3460668030).

Almost surely, 2^128532140520 is an apocalyptic number.

128532140520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

128532140520 is an abundant number, since it is smaller than the sum of its proper divisors (314433367320).

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

128532140520 is a wasteful number, since it uses less digits than its factorization.

128532140520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 793035 (or 793031 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 33.

The spelling of 128532140520 in words is "one hundred twenty-eight billion, five hundred thirty-two million, one hundred forty thousand, five hundred twenty".