13894622784 has 672 divisors, whose sum is σ = 52037406720. Its totient is φ = 3449143296.

The previous prime is 13894622771. The next prime is 13894622821. The reversal of 13894622784 is 48722649831.

13894622784 is a `hidden beast` number, since 1 + 3 + 8 + 9 + 4 + 622 + 7 + 8 + 4 = 666.

It is a tau number, because it is divible by the number of its divisors (672).

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 13894622784.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 61209679 + ... + 61209905.

Almost surely, 2^13894622784 is an apocalyptic number.

13894622784 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13894622784, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26018703360).

13894622784 is an abundant number, since it is smaller than the sum of its proper divisors (38142783936).

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

13894622784 is a wasteful number, since it uses less digits than its factorization.

13894622784 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 335 (or 322 counting only the distinct ones).

The product of its digits is 4644864, while the sum is 54.

The spelling of 13894622784 in words is "thirteen billion, eight hundred ninety-four million, six hundred twenty-two thousand, seven hundred eighty-four".