13106128648 has 32 divisors (see below), whose sum is σ = 26446086360. Its totient is φ = 6066478080.

The previous prime is 13106128643. The next prime is 13106128669. The reversal of 13106128648 is 84682160131.

It can be written as a sum of positive squares in 4 ways, for example, as 11898010084 + 1208118564 = 109078^2 + 34758^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 13106128648.

It is not an unprimeable number, because it can be changed into a prime (13106128643) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 781611 + ... + 798202.

Almost surely, 2^13106128648 is an apocalyptic number.

It is an amenable number.

13106128648 is an abundant number, since it is smaller than the sum of its proper divisors (13339957712).

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

13106128648 is a wasteful number, since it uses less digits than its factorization.

13106128648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1579897 (or 1579893 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 40.

Adding to 13106128648 its reverse (84682160131), we get a palindrome (97788288779).

The spelling of 13106128648 in words is "thirteen billion, one hundred six million, one hundred twenty-eight thousand, six hundred forty-eight".