505405345604 has 12 divisors (see below), whose sum is σ = 936486375804. Its totient is φ = 237837809664.

The previous prime is 505405345583. The next prime is 505405345607. The reversal of 505405345604 is 406543504505.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 324569484100 + 180835861504 = 569710^2 + 425248^2 .

It is not an unprimeable number, because it can be changed into a prime (505405345607) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3716215709 + ... + 3716215844.

It is an arithmetic number, because the mean of its divisors is an integer number (78040531317).

Almost surely, 2^505405345604 is an apocalyptic number.

It is an amenable number.

505405345604 is a deficient number, since it is larger than the sum of its proper divisors (431081030200).

505405345604 is a wasteful number, since it uses less digits than its factorization.

505405345604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7432431574 (or 7432431572 counting only the distinct ones).

The product of its (nonzero) digits is 720000, while the sum is 41.

The spelling of 505405345604 in words is "five hundred five billion, four hundred five million, three hundred forty-five thousand, six hundred four".