505405463503 has 2 divisors, whose sum is σ = 505405463504. Its totient is φ = 505405463502.

The previous prime is 505405463461. The next prime is 505405463539. The reversal of 505405463503 is 305364504505.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 505405463503 - 2¹⁷ = 505405332431 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (505405463543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 252702731751 + 252702731752.

It is an arithmetic number, because the mean of its divisors is an integer number (252702731752).

Almost surely, 2^505405463503 is an apocalyptic number.

505405463503 is a deficient number, since it is larger than the sum of its proper divisors (1).

505405463503 is an equidigital number, since it uses as much as digits as its factorization.

505405463503 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 540000, while the sum is 40.

The spelling of 505405463503 in words is "five hundred five billion, four hundred five million, four hundred sixty-three thousand, five hundred three".