11660643526 has 32 divisors (see below), whose sum is σ = 20522481408. Its totient is φ = 4865658720.

The previous prime is 11660643487. The next prime is 11660643613. The reversal of 11660643526 is 62534606611.

11660643526 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 37221 + ... + 157183.

It is an arithmetic number, because the mean of its divisors is an integer number (641327544).

Almost surely, 2^11660643526 is an apocalyptic number.

11660643526 is a deficient number, since it is larger than the sum of its proper divisors (8861837882).

11660643526 is a wasteful number, since it uses less digits than its factorization.

11660643526 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120156.

The product of its (nonzero) digits is 155520, while the sum is 40.

The spelling of 11660643526 in words is "eleven billion, six hundred sixty million, six hundred forty-three thousand, five hundred twenty-six".