128682348436 has 48 divisors (see below), whose sum is σ = 241053397200. Its totient is φ = 59894857728.

The previous prime is 128682348349. The next prime is 128682348461. The reversal of 128682348436 is 634843286821.

It can be written as a sum of positive squares in 8 ways, for example, as 40565988100 + 88116360336 = 201410^2 + 296844^2 .

It is a super-2 number, since 2×128682348436² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4261680 + ... + 4291768.

It is an arithmetic number, because the mean of its divisors is an integer number (5021945775).

Almost surely, 2^128682348436 is an apocalyptic number.

It is an amenable number.

128682348436 is a deficient number, since it is larger than the sum of its proper divisors (112371048764).

128682348436 is a wasteful number, since it uses less digits than its factorization.

128682348436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30796 (or 30794 counting only the distinct ones).

The product of its digits is 10616832, while the sum is 55.

The spelling of 128682348436 in words is "one hundred twenty-eight billion, six hundred eighty-two million, three hundred forty-eight thousand, four hundred thirty-six".