161460481769 has 2 divisors, whose sum is σ = 161460481770. Its totient is φ = 161460481768.

The previous prime is 161460481759. The next prime is 161460481801. The reversal of 161460481769 is 967184064161.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 143231971600 + 18228510169 = 378460^2 + 135013^2 .

It is a cyclic number.

It is not a de Polignac number, because 161460481769 - 2²⁴ = 161443704553 is a prime.

It is a super-2 number, since 2×161460481769² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 161460481769.

It is not a weakly prime, because it can be changed into another prime (161460481759) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80730240884 + 80730240885.

It is an arithmetic number, because the mean of its divisors is an integer number (80730240885).

Almost surely, 2^161460481769 is an apocalyptic number.

It is an amenable number.

161460481769 is a deficient number, since it is larger than the sum of its proper divisors (1).

161460481769 is an equidigital number, since it uses as much as digits as its factorization.

161460481769 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1741824, while the sum is 53.

The spelling of 161460481769 in words is "one hundred sixty-one billion, four hundred sixty million, four hundred eighty-one thousand, seven hundred sixty-nine".