182145765421 has 2 divisors, whose sum is σ = 182145765422. Its totient is φ = 182145765420.

The previous prime is 182145765391. The next prime is 182145765469. The reversal of 182145765421 is 124567541281.

182145765421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 140090009796 + 42055755625 = 374286^2 + 205075^2 .

It is a cyclic number.

It is not a de Polignac number, because 182145765421 - 2²¹ = 182143668269 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (182145765491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 91072882710 + 91072882711.

It is an arithmetic number, because the mean of its divisors is an integer number (91072882711).

Almost surely, 2^182145765421 is an apocalyptic number.

It is an amenable number.

182145765421 is a deficient number, since it is larger than the sum of its proper divisors (1).

182145765421 is an equidigital number, since it uses as much as digits as its factorization.

182145765421 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 537600, while the sum is 46.

The spelling of 182145765421 in words is "one hundred eighty-two billion, one hundred forty-five million, seven hundred sixty-five thousand, four hundred twenty-one".