13866212050 has 12 divisors (see below), whose sum is σ = 25791154506. Its totient is φ = 5546484800.

The previous prime is 13866212039. The next prime is 13866212051. The reversal of 13866212050 is 5021266831.

It can be written as a sum of positive squares in 3 ways, for example, as 13131097281 + 735114769 = 114591^2 + 27113^2 .

It is a junction number, because it is equal to n+sod(n) for n = 13866211997 and 13866212015.

It is not an unprimeable number, because it can be changed into a prime (13866212051) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 138662071 + ... + 138662170.

Almost surely, 2^13866212050 is an apocalyptic number.

13866212050 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13866212050 is a deficient number, since it is larger than the sum of its proper divisors (11924942456).

13866212050 is a wasteful number, since it uses less digits than its factorization.

13866212050 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 277324253 (or 277324248 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 34.

Adding to 13866212050 its reverse (5021266831), we get a palindrome (18887478881).

The spelling of 13866212050 in words is "thirteen billion, eight hundred sixty-six million, two hundred twelve thousand, fifty".