12794550769 has 81 divisors (see below), whose sum is σ = 17872882209. Its totient is φ = 9121432320.

The previous prime is 12794550763. The next prime is 12794550773. The reversal of 12794550769 is 96705549721.

It is a happy number.

The square root of 12794550769 is 113113.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 9547830369 + 3246720400 = 97713^2 + 56980^2 .

It is a de Polignac number, because none of the positive numbers 2^k-12794550769 is a prime.

It is a super-2 number, since 2×12794550769² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12794550763) by changing a digit.

It is a polite number, since it can be written in 80 ways as a sum of consecutive naturals, for example, 113226057 + ... + 113226169.

Almost surely, 2^12794550769 is an apocalyptic number.

12794550769 is the 113113-rd square number.

12794550769 is the 56557-th centered octagonal number.

It is an amenable number.

12794550769 is a deficient number, since it is larger than the sum of its proper divisors (5078331440).

12794550769 is a wasteful number, since it uses less digits than its factorization.

12794550769 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 288 (or 144 counting only the distinct ones).

The product of its (nonzero) digits is 4762800, while the sum is 55.

The spelling of 12794550769 in words is "twelve billion, seven hundred ninety-four million, five hundred fifty thousand, seven hundred sixty-nine".