41644920437 has 2 divisors, whose sum is σ = 41644920438. Its totient is φ = 41644920436.

The previous prime is 41644920391. The next prime is 41644920463. The reversal of 41644920437 is 73402944614.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 23699370916 + 17945549521 = 153946^2 + 133961^2 .

It is a cyclic number.

It is not a de Polignac number, because 41644920437 - 2⁸ = 41644920181 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (41614920437) 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, 20822460218 + 20822460219.

It is an arithmetic number, because the mean of its divisors is an integer number (20822460219).

Almost surely, 2^41644920437 is an apocalyptic number.

It is an amenable number.

41644920437 is a deficient number, since it is larger than the sum of its proper divisors (1).

41644920437 is an equidigital number, since it uses as much as digits as its factorization.

41644920437 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 580608, while the sum is 44.

The spelling of 41644920437 in words is "forty-one billion, six hundred forty-four million, nine hundred twenty thousand, four hundred thirty-seven".