11840785357 has 4 divisors (see below), whose sum is σ = 11844280576. Its totient is φ = 11837290140.

The previous prime is 11840785331. The next prime is 11840785367. The reversal of 11840785357 is 75358704811.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 75358704811 = 13 ⋅5796823447.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11840785357 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11840785357.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11840785367) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1742523 + ... + 1749304.

It is an arithmetic number, because the mean of its divisors is an integer number (2961070144).

Almost surely, 2^11840785357 is an apocalyptic number.

It is an amenable number.

11840785357 is a deficient number, since it is larger than the sum of its proper divisors (3495219).

11840785357 is an equidigital number, since it uses as much as digits as its factorization.

11840785357 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3495218.

The product of its (nonzero) digits is 940800, while the sum is 49.

The spelling of 11840785357 in words is "eleven billion, eight hundred forty million, seven hundred eighty-five thousand, three hundred fifty-seven".