12734400012 has 12 divisors (see below), whose sum is σ = 29713600056. Its totient is φ = 4244800000.

The previous prime is 12734399987. The next prime is 12734400017. The reversal of 12734400012 is 21000443721.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (12734400017) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 530599989 + ... + 530600012.

It is an arithmetic number, because the mean of its divisors is an integer number (2476133338).

Almost surely, 2^12734400012 is an apocalyptic number.

12734400012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12734400012 is an abundant number, since it is smaller than the sum of its proper divisors (16979200044).

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

12734400012 is a wasteful number, since it uses less digits than its factorization.

12734400012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1061200008 (or 1061200006 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 24.

Adding to 12734400012 its reverse (21000443721), we get a palindrome (33734843733).

The spelling of 12734400012 in words is "twelve billion, seven hundred thirty-four million, four hundred thousand, twelve".