12134343440 has 40 divisors (see below), whose sum is σ = 28812620160. Its totient is φ = 4750464896.

The previous prime is 12134343373. The next prime is 12134343461. The reversal of 12134343440 is 4434343121.

It is a happy number.

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

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1609850 + ... + 1617369.

It is an arithmetic number, because the mean of its divisors is an integer number (720315504).

Almost surely, 2^12134343440 is an apocalyptic number.

12134343440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12134343440 is an abundant number, since it is smaller than the sum of its proper divisors (16678276720).

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

12134343440 is a wasteful number, since it uses less digits than its factorization.

12134343440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3227279 (or 3227273 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 29.

Adding to 12134343440 its reverse (4434343121), we get a palindrome (16568686561).

The spelling of 12134343440 in words is "twelve billion, one hundred thirty-four million, three hundred forty-three thousand, four hundred forty".