128710532509900 has 144 divisors (see below), whose sum is σ = 322623901998720. Its totient is φ = 44049591014400.

The previous prime is 128710532509847. The next prime is 128710532509969. The reversal of 128710532509900 is 9905235017821.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1347156331 + ... + 1347251869.

It is an arithmetic number, because the mean of its divisors is an integer number (2240443763880).

Almost surely, 2^{128710532509900} is an apocalyptic number.

128710532509900 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

128710532509900 is an abundant number, since it is smaller than the sum of its proper divisors (193913369488820).

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

128710532509900 is a wasteful number, since it uses less digits than its factorization.

128710532509900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167624 (or 167617 counting only the distinct ones).

The product of its (nonzero) digits is 1360800, while the sum is 52.

The spelling of 128710532509900 in words is "one hundred twenty-eight trillion, seven hundred ten billion, five hundred thirty-two million, five hundred nine thousand, nine hundred".