40208484649 has 2 divisors, whose sum is σ = 40208484650. Its totient is φ = 40208484648.

The previous prime is 40208484557. The next prime is 40208484691. The reversal of 40208484649 is 94648480204.

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., 40136115600 + 72369049 = 200340^2 + 8507^2 .

It is a cyclic number.

It is not a de Polignac number, because 40208484649 - 2⁷ = 40208484521 is a prime.

It is not a weakly prime, because it can be changed into another prime (40208484049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20104242324 + 20104242325.

It is an arithmetic number, because the mean of its divisors is an integer number (20104242325).

Almost surely, 2^40208484649 is an apocalyptic number.

It is an amenable number.

40208484649 is a deficient number, since it is larger than the sum of its proper divisors (1).

40208484649 is an equidigital number, since it uses as much as digits as its factorization.

40208484649 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1769472, while the sum is 49.

The spelling of 40208484649 in words is "forty billion, two hundred eight million, four hundred eighty-four thousand, six hundred forty-nine".