13868400244 has 12 divisors (see below), whose sum is σ = 24347241604. Its totient is φ = 6912045504.

The previous prime is 13868400211. The next prime is 13868400307. The reversal of 13868400244 is 44200486831.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 783328144 + 13085072100 = 27988^2 + 114390^2 .

It is a super-3 number, since 3×13868400244³ (a number of 31 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 13868400197 and 13868400206.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5537247 + ... + 5539750.

Almost surely, 2^13868400244 is an apocalyptic number.

It is an amenable number.

13868400244 is a deficient number, since it is larger than the sum of its proper divisors (10478841360).

13868400244 is a wasteful number, since it uses less digits than its factorization.

13868400244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11077314 (or 11077312 counting only the distinct ones).

The product of its (nonzero) digits is 147456, while the sum is 40.

The spelling of 13868400244 in words is "thirteen billion, eight hundred sixty-eight million, four hundred thousand, two hundred forty-four".