41752997581 has 2 divisors, whose sum is σ = 41752997582. Its totient is φ = 41752997580.

The previous prime is 41752997567. The next prime is 41752997633. The reversal of 41752997581 is 18579925714.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 30044675556 + 11708322025 = 173334^2 + 108205^2 .

It is a cyclic number.

It is not a de Polignac number, because 41752997581 - 2⁷ = 41752997453 is a prime.

It is a super-2 number, since 2×41752997581² (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 (41752997501) 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 as a sum of consecutive naturals, namely, 20876498790 + 20876498791.

It is an arithmetic number, because the mean of its divisors is an integer number (20876498791).

Almost surely, 2^41752997581 is an apocalyptic number.

It is an amenable number.

41752997581 is a deficient number, since it is larger than the sum of its proper divisors (1).

41752997581 is an equidigital number, since it uses as much as digits as its factorization.

41752997581 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6350400, while the sum is 58.

The spelling of 41752997581 in words is "forty-one billion, seven hundred fifty-two million, nine hundred ninety-seven thousand, five hundred eighty-one".