11781435055843 has 4 divisors (see below), whose sum is σ = 11793065298768. Its totient is φ = 11769804812920.

The previous prime is 11781435055829. The next prime is 11781435055877. The reversal of 11781435055843 is 34855053418711.

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

It is a cyclic number.

It is not a de Polignac number, because 11781435055843 - 2¹³ = 11781435047651 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11781435155843) 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, 5815119943 + ... + 5815121968.

It is an arithmetic number, because the mean of its divisors is an integer number (2948266324692).

Almost surely, 2^{11781435055843} is an apocalyptic number.

11781435055843 is a deficient number, since it is larger than the sum of its proper divisors (11630242925).

11781435055843 is a wasteful number, since it uses less digits than its factorization.

11781435055843 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11630242924.

The product of its (nonzero) digits is 8064000, while the sum is 55.

The spelling of 11781435055843 in words is "eleven trillion, seven hundred eighty-one billion, four hundred thirty-five million, fifty-five thousand, eight hundred forty-three".