11691063459 has 12 divisors (see below), whose sum is σ = 17205716736. Its totient is φ = 7646984592.

The previous prime is 11691063389. The next prime is 11691063469. The reversal of 11691063459 is 95436019611.

11691063459 is a `hidden beast` number, since 1 + 1 + 6 + 9 + 1 + 0 + 634 + 5 + 9 = 666.

It is not a de Polignac number, because 11691063459 - 2⁷ = 11691063331 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11691063469) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12254307 + ... + 12255260.

It is an arithmetic number, because the mean of its divisors is an integer number (1433809728).

Almost surely, 2^11691063459 is an apocalyptic number.

11691063459 is a deficient number, since it is larger than the sum of its proper divisors (5514653277).

11691063459 is a wasteful number, since it uses less digits than its factorization.

11691063459 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24509626 (or 24509623 counting only the distinct ones).

The product of its (nonzero) digits is 174960, while the sum is 45.

The spelling of 11691063459 in words is "eleven billion, six hundred ninety-one million, sixty-three thousand, four hundred fifty-nine".