165197199473 has 2 divisors, whose sum is σ = 165197199474. Its totient is φ = 165197199472.

The previous prime is 165197199463. The next prime is 165197199523. The reversal of 165197199473 is 374991791561.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 84872003584 + 80325195889 = 291328^2 + 283417^2 .

It is a cyclic number.

It is not a de Polignac number, because 165197199473 - 2²⁴ = 165180422257 is a prime.

It is a super-2 number, since 2×165197199473² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (165197199463) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82598599736 + 82598599737.

It is an arithmetic number, because the mean of its divisors is an integer number (82598599737).

Almost surely, 2^165197199473 is an apocalyptic number.

It is an amenable number.

165197199473 is a deficient number, since it is larger than the sum of its proper divisors (1).

165197199473 is an equidigital number, since it uses as much as digits as its factorization.

165197199473 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12859560, while the sum is 62.

The spelling of 165197199473 in words is "one hundred sixty-five billion, one hundred ninety-seven million, one hundred ninety-nine thousand, four hundred seventy-three".