128740136943 has 16 divisors (see below), whose sum is σ = 193715568000. Its totient is φ = 75333830880.

The previous prime is 128740136897. The next prime is 128740136951. The reversal of 128740136943 is 349631047821.

It is not a de Polignac number, because 128740136943 - 2¹⁰ = 128740135919 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 128740136892 and 128740136901.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128740136963) 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, 67261393 + ... + 67263306.

It is an arithmetic number, because the mean of its divisors is an integer number (12107223000).

Almost surely, 2^128740136943 is an apocalyptic number.

128740136943 is a deficient number, since it is larger than the sum of its proper divisors (64975431057).

128740136943 is a wasteful number, since it uses less digits than its factorization.

128740136943 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134524742.

The product of its (nonzero) digits is 870912, while the sum is 48.

The spelling of 128740136943 in words is "one hundred twenty-eight billion, seven hundred forty million, one hundred thirty-six thousand, nine hundred forty-three".