41801661783773 has 2 divisors, whose sum is σ = 41801661783774. Its totient is φ = 41801661783772.

The previous prime is 41801661783769. The next prime is 41801661783803. The reversal of 41801661783773 is 37738716610814.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 35166287633689 + 6635374150084 = 5930117^2 + 2575922^2 .

It is a cyclic number.

It is not a de Polignac number, because 41801661783773 - 2² = 41801661783769 is a prime.

It is a super-2 number, since 2×41801661783773² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (41801661783373) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20900830891886 + 20900830891887.

It is an arithmetic number, because the mean of its divisors is an integer number (20900830891887).

Almost surely, 2^{41801661783773} is an apocalyptic number.

It is an amenable number.

41801661783773 is a deficient number, since it is larger than the sum of its proper divisors (1).

41801661783773 is an equidigital number, since it uses as much as digits as its factorization.

41801661783773 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 28449792, while the sum is 62.

The spelling of 41801661783773 in words is "forty-one trillion, eight hundred one billion, six hundred sixty-one million, seven hundred eighty-three thousand, seven hundred seventy-three".