13943568912 has 320 divisors, whose sum is σ = 49416837120. Its totient is φ = 3278610432.

The previous prime is 13943568883. The next prime is 13943568953. The reversal of 13943568912 is 21986534931.

It is a super-2 number, since 2×13943568912² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1405923 + ... + 1415805.

It is an arithmetic number, because the mean of its divisors is an integer number (154427616).

Almost surely, 2^13943568912 is an apocalyptic number.

13943568912 is a gapful number since it is divisible by the number (12) 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 13943568912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24708418560).

13943568912 is an abundant number, since it is smaller than the sum of its proper divisors (35473268208).

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

13943568912 is a wasteful number, since it uses less digits than its factorization.

13943568912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9950 (or 9944 counting only the distinct ones).

The product of its digits is 1399680, while the sum is 51.

The spelling of 13943568912 in words is "thirteen billion, nine hundred forty-three million, five hundred sixty-eight thousand, nine hundred twelve".