128682348437 has 4 divisors (see below), whose sum is σ = 128781260076. Its totient is φ = 128583436800.

The previous prime is 128682348349. The next prime is 128682348461. The reversal of 128682348437 is 734843286821.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 22223057476 + 106459290961 = 149074^2 + 326281^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-128682348437 is a prime.

It is a super-2 number, since 2×128682348437² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128682348037) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 49453868 + ... + 49456469.

It is an arithmetic number, because the mean of its divisors is an integer number (32195315019).

Almost surely, 2^128682348437 is an apocalyptic number.

It is an amenable number.

128682348437 is a deficient number, since it is larger than the sum of its proper divisors (98911639).

128682348437 is an equidigital number, since it uses as much as digits as its factorization.

128682348437 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98911638.

The product of its digits is 12386304, while the sum is 56.

The spelling of 128682348437 in words is "one hundred twenty-eight billion, six hundred eighty-two million, three hundred forty-eight thousand, four hundred thirty-seven".