1405550320403 has 2 divisors, whose sum is σ = 1405550320404. Its totient is φ = 1405550320402.

The previous prime is 1405550320357. The next prime is 1405550320411. The reversal of 1405550320403 is 3040230555041.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1405550320403 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1405550320403.

It is not a weakly prime, because it can be changed into another prime (1405550320003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 702775160201 + 702775160202.

It is an arithmetic number, because the mean of its divisors is an integer number (702775160202).

Almost surely, 2^{1405550320403} is an apocalyptic number.

1405550320403 is a deficient number, since it is larger than the sum of its proper divisors (1).

1405550320403 is an equidigital number, since it uses as much as digits as its factorization.

1405550320403 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36000, while the sum is 32.

Adding to 1405550320403 its reverse (3040230555041), we get a palindrome (4445780875444).

The spelling of 1405550320403 in words is "one trillion, four hundred five billion, five hundred fifty million, three hundred twenty thousand, four hundred three".