40544698289 has 2 divisors, whose sum is σ = 40544698290. Its totient is φ = 40544698288.

The previous prime is 40544698277. The next prime is 40544698307. The reversal of 40544698289 is 98289644504.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 39747200689 + 797497600 = 199367^2 + 28240^2 .

It is a cyclic number.

It is not a de Polignac number, because 40544698289 - 2¹⁶ = 40544632753 is a prime.

It is not a weakly prime, because it can be changed into another prime (40544698219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20272349144 + 20272349145.

It is an arithmetic number, because the mean of its divisors is an integer number (20272349145).

Almost surely, 2^40544698289 is an apocalyptic number.

It is an amenable number.

40544698289 is a deficient number, since it is larger than the sum of its proper divisors (1).

40544698289 is an equidigital number, since it uses as much as digits as its factorization.

40544698289 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 19906560, while the sum is 59.

The spelling of 40544698289 in words is "forty billion, five hundred forty-four million, six hundred ninety-eight thousand, two hundred eighty-nine".