41427636402781 has 2 divisors, whose sum is σ = 41427636402782. Its totient is φ = 41427636402780.

The previous prime is 41427636402709. The next prime is 41427636402821. The reversal of 41427636402781 is 18720463672414.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 39162939480900 + 2264696921881 = 6258030^2 + 1504891^2 .

It is a cyclic number.

It is not a de Polignac number, because 41427636402781 - 2¹⁷ = 41427636271709 is a prime.

It is a super-2 number, since 2×41427636402781² (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 (41427636405781) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20713818201390 + 20713818201391.

It is an arithmetic number, because the mean of its divisors is an integer number (20713818201391).

Almost surely, 2^{41427636402781} is an apocalyptic number.

It is an amenable number.

41427636402781 is a deficient number, since it is larger than the sum of its proper divisors (1).

41427636402781 is an equidigital number, since it uses as much as digits as its factorization.

41427636402781 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10838016, while the sum is 55.

The spelling of 41427636402781 in words is "forty-one trillion, four hundred twenty-seven billion, six hundred thirty-six million, four hundred two thousand, seven hundred eighty-one".