13943784880 has 40 divisors (see below), whose sum is σ = 34326320832. Its totient is φ = 5249424384.

The previous prime is 13943784853. The next prime is 13943784889. The reversal of 13943784880 is 8848734931.

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×13943784880² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (13943784889) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5125032 + ... + 5127751.

Almost surely, 2^13943784880 is an apocalyptic number.

13943784880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13943784880 is an abundant number, since it is smaller than the sum of its proper divisors (20382535952).

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

13943784880 is a wasteful number, since it uses less digits than its factorization.

13943784880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10252813 (or 10252807 counting only the distinct ones).

The product of its (nonzero) digits is 4644864, while the sum is 55.

The spelling of 13943784880 in words is "thirteen billion, nine hundred forty-three million, seven hundred eighty-four thousand, eight hundred eighty".