11857784308 has 24 divisors (see below), whose sum is σ = 22173366600. Its totient is φ = 5528936448.

The previous prime is 11857784299. The next prime is 11857784311. The reversal of 11857784308 is 80348775811.

It can be written as a sum of positive squares in 4 ways, for example, as 3899003364 + 7958780944 = 62442^2 + 89212^2 .

It is a congruent number.

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, 792493 + ... + 807316.

It is an arithmetic number, because the mean of its divisors is an integer number (923890275).

Almost surely, 2^11857784308 is an apocalyptic number.

It is an amenable number.

11857784308 is a deficient number, since it is larger than the sum of its proper divisors (10315582292).

11857784308 is a wasteful number, since it uses less digits than its factorization.

11857784308 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1599939 (or 1599937 counting only the distinct ones).

The product of its (nonzero) digits is 1505280, while the sum is 52.

The spelling of 11857784308 in words is "eleven billion, eight hundred fifty-seven million, seven hundred eighty-four thousand, three hundred eight".