12736738378 has 16 divisors (see below), whose sum is σ = 23513978880. Its totient is φ = 5038709616.

The previous prime is 12736738373. The next prime is 12736738393. The reversal of 12736738378 is 87383763721.

It is not an unprimeable number, because it can be changed into a prime (12736738373) 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, 34990858 + ... + 34991221.

It is an arithmetic number, because the mean of its divisors is an integer number (1469623680).

Almost surely, 2^12736738378 is an apocalyptic number.

12736738378 is a deficient number, since it is larger than the sum of its proper divisors (10777240502).

12736738378 is a wasteful number, since it uses less digits than its factorization.

12736738378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69982101.

The product of its digits is 7112448, while the sum is 55.

The spelling of 12736738378 in words is "twelve billion, seven hundred thirty-six million, seven hundred thirty-eight thousand, three hundred seventy-eight".