11628796509 has 80 divisors (see below), whose sum is σ = 19393330176. Its totient is φ = 6884935200.

The previous prime is 11628796483. The next prime is 11628796567. The reversal of 11628796509 is 90569782611.

11628796509 is a `hidden beast` number, since 1 + 1 + 62 + 8 + 79 + 6 + 509 = 666.

11628796509 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 11628796509 - 2⁷ = 11628796381 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11628796579) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 7819564 + ... + 7821050.

Almost surely, 2^11628796509 is an apocalyptic number.

It is an amenable number.

11628796509 is a deficient number, since it is larger than the sum of its proper divisors (7764533667).

11628796509 is a wasteful number, since it uses less digits than its factorization.

11628796509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1708 (or 1699 counting only the distinct ones).

The product of its (nonzero) digits is 1632960, while the sum is 54.

The spelling of 11628796509 in words is "eleven billion, six hundred twenty-eight million, seven hundred ninety-six thousand, five hundred nine".