197722388168 has 12 divisors (see below), whose sum is σ = 370731835995. Its totient is φ = 98860565240.

The previous prime is 197722388147. The next prime is 197722388183. The reversal of 197722388168 is 861883227791.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in only one way, i.e., 98861194084 + 98861194084 = 314422^2 + 314422^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=314422.

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 197722388168.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 1179083 + ... + 1336293.

Almost surely, 2^197722388168 is an apocalyptic number.

It is an amenable number.

197722388168 is a deficient number, since it is larger than the sum of its proper divisors (173009447827).

197722388168 is an frugal number, since it uses more digits than its factorization.

197722388168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 314428 (or 157213 counting only the distinct ones).

The product of its digits is 16257024, while the sum is 62.

The spelling of 197722388168 in words is "one hundred ninety-seven billion, seven hundred twenty-two million, three hundred eighty-eight thousand, one hundred sixty-eight".