12650250138 has 32 divisors (see below), whose sum is σ = 26467041600. Its totient is φ = 4025594496.

The previous prime is 12650250131. The next prime is 12650250157. The reversal of 12650250138 is 83105205621.

It is a junction number, because it is equal to n+sod(n) for n = 12650250099 and 12650250108.

It is not an unprimeable number, because it can be changed into a prime (12650250131) 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 15 ways as a sum of consecutive naturals, for example, 392956 + ... + 423927.

It is an arithmetic number, because the mean of its divisors is an integer number (827095050).

Almost surely, 2^12650250138 is an apocalyptic number.

12650250138 is an abundant number, since it is smaller than the sum of its proper divisors (13816791462).

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

12650250138 is a wasteful number, since it uses less digits than its factorization.

12650250138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 817006.

The product of its (nonzero) digits is 14400, while the sum is 33.

Adding to 12650250138 its reverse (83105205621), we get a palindrome (95755455759).

The spelling of 12650250138 in words is "twelve billion, six hundred fifty million, two hundred fifty thousand, one hundred thirty-eight".