1608518418011 has 4 divisors (see below), whose sum is σ = 1609262760024. Its totient is φ = 1607774076000.

The previous prime is 1608518417999. The next prime is 1608518418019. The reversal of 1608518418011 is 1108148158061.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1608518418011 - 2³⁸ = 1333640511067 is a prime.

It is a super-2 number, since 2×1608518418011² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1608518418019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 372167765 + ... + 372172086.

It is an arithmetic number, because the mean of its divisors is an integer number (402315690006).

Almost surely, 2^{1608518418011} is an apocalyptic number.

1608518418011 is a deficient number, since it is larger than the sum of its proper divisors (744342013).

1608518418011 is an equidigital number, since it uses as much as digits as its factorization.

1608518418011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 744342012.

The product of its (nonzero) digits is 61440, while the sum is 44.

The spelling of 1608518418011 in words is "one trillion, six hundred eight billion, five hundred eighteen million, four hundred eighteen thousand, eleven".