505405454620 has 48 divisors (see below), whose sum is σ = 1160512159968. Its totient is φ = 183359324160.

The previous prime is 505405454599. The next prime is 505405454627. The reversal of 505405454620 is 26454504505.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (505405454627) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2557509 + ... + 2748028.

It is an arithmetic number, because the mean of its divisors is an integer number (24177336666).

Almost surely, 2^505405454620 is an apocalyptic number.

It is an amenable number.

505405454620 is an abundant number, since it is smaller than the sum of its proper divisors (655106705348).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

505405454620 is a wasteful number, since it uses less digits than its factorization.

505405454620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5305990 (or 5305988 counting only the distinct ones).

The product of its (nonzero) digits is 480000, while the sum is 40.

The spelling of 505405454620 in words is "five hundred five billion, four hundred five million, four hundred fifty-four thousand, six hundred twenty".