128727366860 has 48 divisors (see below), whose sum is σ = 273903759360. Its totient is φ = 50810485440.

The previous prime is 128727366847. The next prime is 128727366863. The reversal of 128727366860 is 68663727821.

It is a super-3 number, since 3×128727366860³ (a number of 34 digits) contains 333 as substring.

It is a Smith number, since the sum of its digits (56) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 128727366796 and 128727366805.

It is not an unprimeable number, because it can be changed into a prime (128727366863) 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, 2896205 + ... + 2940315.

It is an arithmetic number, because the mean of its divisors is an integer number (5706328320).

Almost surely, 2^128727366860 is an apocalyptic number.

128727366860 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

128727366860 is an abundant number, since it is smaller than the sum of its proper divisors (145176392500).

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

128727366860 is a wasteful number, since it uses less digits than its factorization.

128727366860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46046 (or 46044 counting only the distinct ones).

The product of its (nonzero) digits is 8128512, while the sum is 56.

The spelling of 128727366860 in words is "one hundred twenty-eight billion, seven hundred twenty-seven million, three hundred sixty-six thousand, eight hundred sixty".