405572712481 has 2 divisors, whose sum is σ = 405572712482. Its totient is φ = 405572712480.

The previous prime is 405572712431. The next prime is 405572712499. The reversal of 405572712481 is 184217275504.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 251136288225 + 154436424256 = 501135^2 + 392984^2 .

It is a cyclic number.

It is not a de Polignac number, because 405572712481 - 2⁷ = 405572712353 is a prime.

It is a super-2 number, since 2×405572712481² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (405572712431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202786356240 + 202786356241.

It is an arithmetic number, because the mean of its divisors is an integer number (202786356241).

Almost surely, 2^405572712481 is an apocalyptic number.

It is an amenable number.

405572712481 is a deficient number, since it is larger than the sum of its proper divisors (1).

405572712481 is an equidigital number, since it uses as much as digits as its factorization.

405572712481 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 627200, while the sum is 46.

Adding to 405572712481 its reverse (184217275504), we get a palindrome (589789987985).

The spelling of 405572712481 in words is "four hundred five billion, five hundred seventy-two million, seven hundred twelve thousand, four hundred eighty-one".