165454422061 has 2 divisors, whose sum is σ = 165454422062. Its totient is φ = 165454422060.

The previous prime is 165454422043. The next prime is 165454422079. The reversal of 165454422061 is 160224454561.

It is a balanced prime because it is at equal distance from previous prime (165454422043) and next prime (165454422079).

It can be written as a sum of positive squares in only one way, i.e., 156198057961 + 9256364100 = 395219^2 + 96210^2 .

It is a cyclic number.

It is not a de Polignac number, because 165454422061 - 2¹⁹ = 165453897773 is a prime.

It is a super-3 number, since 3×165454422061³ (a number of 35 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (165454422011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82727211030 + 82727211031.

It is an arithmetic number, because the mean of its divisors is an integer number (82727211031).

Almost surely, 2^165454422061 is an apocalyptic number.

It is an amenable number.

165454422061 is a deficient number, since it is larger than the sum of its proper divisors (1).

165454422061 is an equidigital number, since it uses as much as digits as its factorization.

165454422061 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 230400, while the sum is 40.

The spelling of 165454422061 in words is "one hundred sixty-five billion, four hundred fifty-four million, four hundred twenty-two thousand, sixty-one".