617805842849 has 8 divisors (see below), whose sum is σ = 679485313920. Its totient is φ = 558148649616.

The previous prime is 617805842743. The next prime is 617805842851. The reversal of 617805842849 is 948248508716.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 617805842849 - 2²⁸ = 617537407393 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 617805842791 and 617805842800.

It is not an unprimeable number, because it can be changed into a prime (617805892849) 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 in 7 ways as a sum of consecutive naturals, for example, 505568819 + ... + 505570040.

It is an arithmetic number, because the mean of its divisors is an integer number (84935664240).

Almost surely, 2^617805842849 is an apocalyptic number.

It is an amenable number.

617805842849 is a deficient number, since it is larger than the sum of its proper divisors (61679471071).

617805842849 is a wasteful number, since it uses less digits than its factorization.

617805842849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1011138919.

The product of its (nonzero) digits is 30965760, while the sum is 62.

The spelling of 617805842849 in words is "six hundred seventeen billion, eight hundred five million, eight hundred forty-two thousand, eight hundred forty-nine".