505405345507 has 2 divisors, whose sum is σ = 505405345508. Its totient is φ = 505405345506.

The previous prime is 505405345499. The next prime is 505405345561. The reversal of 505405345507 is 705543504505.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 505405345507 - 2³ = 505405345499 is a prime.

It is not a weakly prime, because it can be changed into another prime (505405345567) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 252702672753 + 252702672754.

It is an arithmetic number, because the mean of its divisors is an integer number (252702672754).

Almost surely, 2^505405345507 is an apocalyptic number.

505405345507 is a deficient number, since it is larger than the sum of its proper divisors (1).

505405345507 is an equidigital number, since it uses as much as digits as its factorization.

505405345507 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1050000, while the sum is 43.

The spelling of 505405345507 in words is "five hundred five billion, four hundred five million, three hundred forty-five thousand, five hundred seven".