11857784306 has 16 divisors (see below), whose sum is σ = 18416943000. Its totient is φ = 5719179648.

The previous prime is 11857784299. The next prime is 11857784311. The reversal of 11857784306 is 60348775811.

It can be written as a sum of positive squares in 4 ways, for example, as 11283750625 + 574033681 = 106225^2 + 23959^2 .

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 30131 + ... + 156918.

Almost surely, 2^11857784306 is an apocalyptic number.

11857784306 is a deficient number, since it is larger than the sum of its proper divisors (6559158694).

11857784306 is a wasteful number, since it uses less digits than its factorization.

11857784306 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 188173.

The product of its (nonzero) digits is 1128960, while the sum is 50.

The spelling of 11857784306 in words is "eleven billion, eight hundred fifty-seven million, seven hundred eighty-four thousand, three hundred six".