11781435055829 has 2 divisors, whose sum is σ = 11781435055830. Its totient is φ = 11781435055828.

The previous prime is 11781435055787. The next prime is 11781435055877. The reversal of 11781435055829 is 92855053418711.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6743250787729 + 5038184268100 = 2596777^2 + 2244590^2 .

It is a cyclic number.

It is not a de Polignac number, because 11781435055829 - 2³⁶ = 11712715579093 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11781435058829) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5890717527914 + 5890717527915.

It is an arithmetic number, because the mean of its divisors is an integer number (5890717527915).

Almost surely, 2^{11781435055829} is an apocalyptic number.

It is an amenable number.

11781435055829 is a deficient number, since it is larger than the sum of its proper divisors (1).

11781435055829 is an equidigital number, since it uses as much as digits as its factorization.

11781435055829 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12096000, while the sum is 59.

The spelling of 11781435055829 in words is "eleven trillion, seven hundred eighty-one billion, four hundred thirty-five million, fifty-five thousand, eight hundred twenty-nine".