12778937853 has 64 divisors (see below), whose sum is σ = 19276185600. Its totient is φ = 7464600000.

The previous prime is 12778937849. The next prime is 12778937867. The reversal of 12778937853 is 35873987721.

It is a happy number.

It is not a de Polignac number, because 12778937853 - 2² = 12778937849 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12778937813) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 38606898 + ... + 38607228.

It is an arithmetic number, because the mean of its divisors is an integer number (301190400).

Almost surely, 2^12778937853 is an apocalyptic number.

It is an amenable number.

12778937853 is a deficient number, since it is larger than the sum of its proper divisors (6497247747).

12778937853 is a wasteful number, since it uses less digits than its factorization.

12778937853 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 734.

The product of its digits is 17781120, while the sum is 60.

The spelling of 12778937853 in words is "twelve billion, seven hundred seventy-eight million, nine hundred thirty-seven thousand, eight hundred fifty-three".