73219113281 has 2 divisors, whose sum is σ = 73219113282. Its totient is φ = 73219113280.

The previous prime is 73219113257. The next prime is 73219113287. The reversal of 73219113281 is 18231191237.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 73012903681 + 206209600 = 270209^2 + 14360^2 .

It is a cyclic number.

It is not a de Polignac number, because 73219113281 - 2¹⁴ = 73219096897 is a prime.

It is a super-2 number, since 2×73219113281² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (73219113287) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36609556640 + 36609556641.

It is an arithmetic number, because the mean of its divisors is an integer number (36609556641).

Almost surely, 2^73219113281 is an apocalyptic number.

It is an amenable number.

73219113281 is a deficient number, since it is larger than the sum of its proper divisors (1).

73219113281 is an equidigital number, since it uses as much as digits as its factorization.

73219113281 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 18144, while the sum is 38.

The spelling of 73219113281 in words is "seventy-three billion, two hundred nineteen million, one hundred thirteen thousand, two hundred eighty-one".