1608135108497 has 2 divisors, whose sum is σ = 1608135108498. Its totient is φ = 1608135108496.

The previous prime is 1608135108439. The next prime is 1608135108539. The reversal of 1608135108497 is 7948015318061.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1436680315456 + 171454793041 = 1198616^2 + 414071^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1608135108497 is a prime.

It is not a weakly prime, because it can be changed into another prime (1608135108397) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 804067554248 + 804067554249.

It is an arithmetic number, because the mean of its divisors is an integer number (804067554249).

Almost surely, 2^{1608135108497} is an apocalyptic number.

It is an amenable number.

1608135108497 is a deficient number, since it is larger than the sum of its proper divisors (1).

1608135108497 is an equidigital number, since it uses as much as digits as its factorization.

1608135108497 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1451520, while the sum is 53.

The spelling of 1608135108497 in words is "one trillion, six hundred eight billion, one hundred thirty-five million, one hundred eight thousand, four hundred ninety-seven".