451223435130581 has 2 divisors, whose sum is σ = 451223435130582. Its totient is φ = 451223435130580.

The previous prime is 451223435130451. The next prime is 451223435130607. The reversal of 451223435130581 is 185031534322154.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 227140798158481 + 224082636972100 = 15071191^2 + 14969390^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-451223435130581 is a prime.

It is a super-2 number, since 2×451223435130581² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (451223635130581) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 225611717565290 + 225611717565291.

It is an arithmetic number, because the mean of its divisors is an integer number (225611717565291).

Almost surely, 2^{451223435130581} is an apocalyptic number.

It is an amenable number.

451223435130581 is a deficient number, since it is larger than the sum of its proper divisors (1).

451223435130581 is an equidigital number, since it uses as much as digits as its factorization.

451223435130581 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1728000, while the sum is 47.

The spelling of 451223435130581 in words is "four hundred fifty-one trillion, two hundred twenty-three billion, four hundred thirty-five million, one hundred thirty thousand, five hundred eighty-one".