13773424041781 has 4 divisors (see below), whose sum is σ = 13786405592364. Its totient is φ = 13760442491200.

The previous prime is 13773424041763. The next prime is 13773424041803. The reversal of 13773424041781 is 18714042437731.

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

It can be written as a sum of positive squares in 2 ways, for example, as 3819714539281 + 9953709502500 = 1954409^2 + 3154950^2 .

It is a cyclic number.

It is not a de Polignac number, because 13773424041781 - 2¹⁷ = 13773423910709 is a prime.

It is a super-2 number, since 2×13773424041781² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13773424041761) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 6490773700 + ... + 6490775821.

It is an arithmetic number, because the mean of its divisors is an integer number (3446601398091).

Almost surely, 2^{13773424041781} is an apocalyptic number.

It is an amenable number.

13773424041781 is a deficient number, since it is larger than the sum of its proper divisors (12981550583).

13773424041781 is a wasteful number, since it uses less digits than its factorization.

13773424041781 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12981550582.

The product of its (nonzero) digits is 3161088, while the sum is 52.

The spelling of 13773424041781 in words is "thirteen trillion, seven hundred seventy-three billion, four hundred twenty-four million, forty-one thousand, seven hundred eighty-one".