169468027745281 has 4 divisors (see below), whose sum is σ = 169469273118292. Its totient is φ = 169466782372272.

The previous prime is 169468027745239. The next prime is 169468027745311. The reversal of 169468027745281 is 182547720864961.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 99715882094656 + 69752145650625 = 9985784^2 + 8351775^2 .

It is a cyclic number.

It is not a de Polignac number, because 169468027745281 - 2²³ = 169468019356673 is a prime.

It is a super-2 number, since 2×169468027745281² (a number of 29 digits) contains 22 as substring.

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 169468027745281.

It is not an unprimeable number, because it can be changed into a prime (169468027145281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 622482366 + ... + 622754551.

It is an arithmetic number, because the mean of its divisors is an integer number (42367318279573).

Almost surely, 2^{169468027745281} is an apocalyptic number.

It is an amenable number.

169468027745281 is a deficient number, since it is larger than the sum of its proper divisors (1245373011).

169468027745281 is a wasteful number, since it uses less digits than its factorization.

169468027745281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1245373010.

The product of its (nonzero) digits is 325140480, while the sum is 70.

The spelling of 169468027745281 in words is "one hundred sixty-nine trillion, four hundred sixty-eight billion, twenty-seven million, seven hundred forty-five thousand, two hundred eighty-one".