240909418609 has 2 divisors, whose sum is σ = 240909418610. Its totient is φ = 240909418608.

The previous prime is 240909418601. The next prime is 240909418619. The reversal of 240909418609 is 906814909042.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 148795347600 + 92114071009 = 385740^2 + 303503^2 .

It is a cyclic number.

It is not a de Polignac number, because 240909418609 - 2³ = 240909418601 is a prime.

It is not a weakly prime, because it can be changed into another prime (240909418601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 120454709304 + 120454709305.

It is an arithmetic number, because the mean of its divisors is an integer number (120454709305).

Almost surely, 2^240909418609 is an apocalyptic number.

It is an amenable number.

240909418609 is a deficient number, since it is larger than the sum of its proper divisors (1).

240909418609 is an equidigital number, since it uses as much as digits as its factorization.

240909418609 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1119744, while the sum is 52.

The spelling of 240909418609 in words is "two hundred forty billion, nine hundred nine million, four hundred eighteen thousand, six hundred nine".