128140262600 has 144 divisors (see below), whose sum is σ = 347246139780. Its totient is φ = 43847731200.

The previous prime is 128140262597. The next prime is 128140262603. The reversal of 128140262600 is 6262041821.

It is an interprime number because it is at equal distance from previous prime (128140262597) and next prime (128140262603).

It can be written as a sum of positive squares in 6 ways, for example, as 21852526276 + 106287736324 = 147826^2 + 326018^2 .

It is not an unprimeable number, because it can be changed into a prime (128140262603) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 5093252 + ... + 5118348.

Almost surely, 2^128140262600 is an apocalyptic number.

128140262600 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 128140262600, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (173623069890).

128140262600 is an abundant number, since it is smaller than the sum of its proper divisors (219105877180).

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

128140262600 is a wasteful number, since it uses less digits than its factorization.

128140262600 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25648 (or 25632 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 32.

The spelling of 128140262600 in words is "one hundred twenty-eight billion, one hundred forty million, two hundred sixty-two thousand, six hundred".