405531332513 has 2 divisors, whose sum is σ = 405531332514. Its totient is φ = 405531332512.

The previous prime is 405531332501. The next prime is 405531332519. The reversal of 405531332513 is 315233135504.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 395399500864 + 10131831649 = 628808^2 + 100657^2 .

It is a cyclic number.

It is not a de Polignac number, because 405531332513 - 2¹⁸ = 405531070369 is a prime.

It is not a weakly prime, because it can be changed into another prime (405531332519) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202765666256 + 202765666257.

It is an arithmetic number, because the mean of its divisors is an integer number (202765666257).

Almost surely, 2^405531332513 is an apocalyptic number.

It is an amenable number.

405531332513 is a deficient number, since it is larger than the sum of its proper divisors (1).

405531332513 is an equidigital number, since it uses as much as digits as its factorization.

405531332513 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 81000, while the sum is 35.

The spelling of 405531332513 in words is "four hundred five billion, five hundred thirty-one million, three hundred thirty-two thousand, five hundred thirteen".