73562664727481 has 2 divisors, whose sum is σ = 73562664727482. Its totient is φ = 73562664727480.

The previous prime is 73562664727403. The next prime is 73562664727507. The reversal of 73562664727481 is 18472746626537.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 60546155261881 + 13016509465600 = 7781141^2 + 3607840^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-73562664727481 is a prime.

It is a super-2 number, since 2×73562664727481² (a number of 29 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (73562664727081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36781332363740 + 36781332363741.

It is an arithmetic number, because the mean of its divisors is an integer number (36781332363741).

Almost surely, 2^{73562664727481} is an apocalyptic number.

It is an amenable number.

73562664727481 is a deficient number, since it is larger than the sum of its proper divisors (1).

73562664727481 is an equidigital number, since it uses as much as digits as its factorization.

73562664727481 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 568995840, while the sum is 68.

The spelling of 73562664727481 in words is "seventy-three trillion, five hundred sixty-two billion, six hundred sixty-four million, seven hundred twenty-seven thousand, four hundred eighty-one".