67509012481 has 2 divisors, whose sum is σ = 67509012482. Its totient is φ = 67509012480.

The previous prime is 67509012469. The next prime is 67509012517. The reversal of 67509012481 is 18421090576.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 59731360000 + 7777652481 = 244400^2 + 88191^2 .

It is a cyclic number.

It is not a de Polignac number, because 67509012481 - 2¹¹ = 67509010433 is a prime.

It is a super-2 number, since 2×67509012481² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (67509012581) 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, 33754506240 + 33754506241.

It is an arithmetic number, because the mean of its divisors is an integer number (33754506241).

Almost surely, 2^67509012481 is an apocalyptic number.

It is an amenable number.

67509012481 is a deficient number, since it is larger than the sum of its proper divisors (1).

67509012481 is an equidigital number, since it uses as much as digits as its factorization.

67509012481 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 120960, while the sum is 43.

The spelling of 67509012481 in words is "sixty-seven billion, five hundred nine million, twelve thousand, four hundred eighty-one".