12764777936 has 20 divisors (see below), whose sum is σ = 24819779364. Its totient is φ = 6359673600.

The previous prime is 12764777929. The next prime is 12764777957. The reversal of 12764777936 is 63977746721.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 5661659536 + 7103118400 = 75244^2 + 84280^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1415075 + ... + 1424066.

Almost surely, 2^12764777936 is an apocalyptic number.

12764777936 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

12764777936 is a deficient number, since it is larger than the sum of its proper divisors (12055001428).

12764777936 is a wasteful number, since it uses less digits than its factorization.

12764777936 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2839430 (or 2839424 counting only the distinct ones).

The product of its digits is 18670176, while the sum is 59.

The spelling of 12764777936 in words is "twelve billion, seven hundred sixty-four million, seven hundred seventy-seven thousand, nine hundred thirty-six".