659794168197 has 6 divisors (see below), whose sum is σ = 953036020742. Its totient is φ = 439862778792.

The previous prime is 659794168153. The next prime is 659794168211. The reversal of 659794168197 is 791861497956.

659794168197 is a `hidden beast` number, since 6 + 59 + 79 + 416 + 8 + 1 + 97 = 666.

It can be written as a sum of positive squares in only one way, i.e., 372333056481 + 287461111716 = 610191^2 + 536154^2 .

It is not a de Polignac number, because 659794168197 - 2⁷ = 659794168069 is a prime.

It is a super-2 number, since 2×659794168197² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (659794168147) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 36655231558 + ... + 36655231575.

Almost surely, 2^659794168197 is an apocalyptic number.

It is an amenable number.

659794168197 is a deficient number, since it is larger than the sum of its proper divisors (293241852545).

659794168197 is a wasteful number, since it uses less digits than its factorization.

659794168197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73310463139 (or 73310463136 counting only the distinct ones).

The product of its digits is 205752960, while the sum is 72.

The spelling of 659794168197 in words is "six hundred fifty-nine billion, seven hundred ninety-four million, one hundred sixty-eight thousand, one hundred ninety-seven".