13899946368 has 256 divisors, whose sum is σ = 48741834240. Its totient is φ = 3397877760.

The previous prime is 13899946309. The next prime is 13899946369. The reversal of 13899946368 is 86364999831.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (66).

It is a junction number, because it is equal to n+sod(n) for n = 13899946299 and 13899946308.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13899946369) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 488830 + ... + 516482.

It is an arithmetic number, because the mean of its divisors is an integer number (190397790).

Almost surely, 2^13899946368 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13899946368, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24370917120).

13899946368 is an abundant number, since it is smaller than the sum of its proper divisors (34841887872).

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

13899946368 is a wasteful number, since it uses less digits than its factorization.

13899946368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27705 (or 27693 counting only the distinct ones).

The product of its digits is 60466176, while the sum is 66.

The spelling of 13899946368 in words is "thirteen billion, eight hundred ninety-nine million, nine hundred forty-six thousand, three hundred sixty-eight".