40985419687489 has 2 divisors, whose sum is σ = 40985419687490. Its totient is φ = 40985419687488.

The previous prime is 40985419687477. The next prime is 40985419687507. The reversal of 40985419687489 is 98478691458904.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 32409793561600 + 8575626125889 = 5692960^2 + 2928417^2 .

It is a cyclic number.

It is not a de Polignac number, because 40985419687489 - 2¹³ = 40985419679297 is a prime.

It is a super-2 number, since 2×40985419687489² (a number of 28 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (40985419687439) 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, 20492709843744 + 20492709843745.

It is an arithmetic number, because the mean of its divisors is an integer number (20492709843745).

Almost surely, 2^{40985419687489} is an apocalyptic number.

It is an amenable number.

40985419687489 is a deficient number, since it is larger than the sum of its proper divisors (1).

40985419687489 is an equidigital number, since it uses as much as digits as its factorization.

40985419687489 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5016453120, while the sum is 82.

The spelling of 40985419687489 in words is "forty trillion, nine hundred eighty-five billion, four hundred nineteen million, six hundred eighty-seven thousand, four hundred eighty-nine".