6997814159617 has 16 divisors (see below), whose sum is σ = 7199050465152. Its totient is φ = 6798087204480.

The previous prime is 6997814159563. The next prime is 6997814159659. The reversal of 6997814159617 is 7169514187996.

It is a cyclic number.

It is not a de Polignac number, because 6997814159617 - 2³¹ = 6995666675969 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 6997814159617.

It is not an unprimeable number, because it can be changed into a prime (6997814159317) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10004743 + ... + 10681315.

It is an arithmetic number, because the mean of its divisors is an integer number (449940654072).

Almost surely, 2^{6997814159617} is an apocalyptic number.

It is an amenable number.

6997814159617 is a deficient number, since it is larger than the sum of its proper divisors (201236305535).

6997814159617 is a wasteful number, since it uses less digits than its factorization.

6997814159617 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 677688.

The product of its digits is 205752960, while the sum is 73.

The spelling of 6997814159617 in words is "six trillion, nine hundred ninety-seven billion, eight hundred fourteen million, one hundred fifty-nine thousand, six hundred seventeen".