41781723413 has 2 divisors, whose sum is σ = 41781723414. Its totient is φ = 41781723412.

The previous prime is 41781723397. The next prime is 41781723443. The reversal of 41781723413 is 31432718714.

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., 36656165764 + 5125557649 = 191458^2 + 71593^2 .

It is a cyclic number.

It is not a de Polignac number, because 41781723413 - 2⁴ = 41781723397 is a prime.

It is a super-2 number, since 2×41781723413² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (41781723443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20890861706 + 20890861707.

It is an arithmetic number, because the mean of its divisors is an integer number (20890861707).

Almost surely, 2^41781723413 is an apocalyptic number.

It is an amenable number.

41781723413 is a deficient number, since it is larger than the sum of its proper divisors (1).

41781723413 is an equidigital number, since it uses as much as digits as its factorization.

41781723413 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 112896, while the sum is 41.

The spelling of 41781723413 in words is "forty-one billion, seven hundred eighty-one million, seven hundred twenty-three thousand, four hundred thirteen".