405244442641 has 2 divisors, whose sum is σ = 405244442642. Its totient is φ = 405244442640.

The previous prime is 405244442503. The next prime is 405244442653. The reversal of 405244442641 is 146244442504.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 290461713025 + 114782729616 = 538945^2 + 338796^2 .

It is a cyclic number.

It is not a de Polignac number, because 405244442641 - 2¹³ = 405244434449 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 405244442594 and 405244442603.

It is not a weakly prime, because it can be changed into another prime (405244442741) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202622221320 + 202622221321.

It is an arithmetic number, because the mean of its divisors is an integer number (202622221321).

Almost surely, 2^405244442641 is an apocalyptic number.

It is an amenable number.

405244442641 is a deficient number, since it is larger than the sum of its proper divisors (1).

405244442641 is an equidigital number, since it uses as much as digits as its factorization.

405244442641 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 491520, while the sum is 40.

The spelling of 405244442641 in words is "four hundred five billion, two hundred forty-four million, four hundred forty-two thousand, six hundred forty-one".