403126880561 has 2 divisors, whose sum is σ = 403126880562. Its totient is φ = 403126880560.

The previous prime is 403126880449. The next prime is 403126880621. The reversal of 403126880561 is 165088621304.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 396377272225 + 6749608336 = 629585^2 + 82156^2 .

It is a cyclic number.

It is not a de Polignac number, because 403126880561 - 2³⁴ = 385947011377 is a prime.

It is a super-3 number, since 3×403126880561³ (a number of 36 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not a weakly prime, because it can be changed into another prime (403126885561) 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, 201563440280 + 201563440281.

It is an arithmetic number, because the mean of its divisors is an integer number (201563440281).

Almost surely, 2^403126880561 is an apocalyptic number.

It is an amenable number.

403126880561 is a deficient number, since it is larger than the sum of its proper divisors (1).

403126880561 is an equidigital number, since it uses as much as digits as its factorization.

403126880561 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 276480, while the sum is 44.

The spelling of 403126880561 in words is "four hundred three billion, one hundred twenty-six million, eight hundred eighty thousand, five hundred sixty-one".