180142567481 has 2 divisors, whose sum is σ = 180142567482. Its totient is φ = 180142567480.

The previous prime is 180142567463. The next prime is 180142567543. The reversal of 180142567481 is 184765241081.

180142567481 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., 92753748025 + 87388819456 = 304555^2 + 295616^2 .

It is a cyclic number.

It is not a de Polignac number, because 180142567481 - 2⁶ = 180142567417 is a prime.

It is a super-2 number, since 2×180142567481² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (180142557481) 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, 90071283740 + 90071283741.

It is an arithmetic number, because the mean of its divisors is an integer number (90071283741).

Almost surely, 2^180142567481 is an apocalyptic number.

It is an amenable number.

180142567481 is a deficient number, since it is larger than the sum of its proper divisors (1).

180142567481 is an equidigital number, since it uses as much as digits as its factorization.

180142567481 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 430080, while the sum is 47.

The spelling of 180142567481 in words is "one hundred eighty billion, one hundred forty-two million, five hundred sixty-seven thousand, four hundred eighty-one".