505366401440 has 48 divisors (see below), whose sum is σ = 1210744039680. Its totient is φ = 199299421440.

The previous prime is 505366401439. The next prime is 505366401479. The reversal of 505366401440 is 44104663505.

It is a junction number, because it is equal to n+sod(n) for n = 505366401394 and 505366401403.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 22231880 + ... + 22254599.

It is an arithmetic number, because the mean of its divisors is an integer number (25223834160).

Almost surely, 2^505366401440 is an apocalyptic number.

It is an amenable number.

505366401440 is an abundant number, since it is smaller than the sum of its proper divisors (705377638240).

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

505366401440 is a wasteful number, since it uses less digits than its factorization.

505366401440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44486565 (or 44486557 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 38.

The spelling of 505366401440 in words is "five hundred five billion, three hundred sixty-six million, four hundred one thousand, four hundred forty".