11657449859 has 4 divisors (see below), whose sum is σ = 12717218040. Its totient is φ = 10597681680.

The previous prime is 11657449847. The next prime is 11657449883. The reversal of 11657449859 is 95894475611.

11657449859 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11657449859 is a prime.

It is a super-2 number, since 2×11657449859² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11657449798 and 11657449807.

It is not an unprimeable number, because it can be changed into a prime (11657449889) 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 3 ways as a sum of consecutive naturals, for example, 529884074 + ... + 529884095.

It is an arithmetic number, because the mean of its divisors is an integer number (3179304510).

Almost surely, 2^11657449859 is an apocalyptic number.

11657449859 is a deficient number, since it is larger than the sum of its proper divisors (1059768181).

11657449859 is a wasteful number, since it uses less digits than its factorization.

11657449859 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1059768180.

The product of its digits is 10886400, while the sum is 59.

The spelling of 11657449859 in words is "eleven billion, six hundred fifty-seven million, four hundred forty-nine thousand, eight hundred fifty-nine".