505404522040 has 64 divisors (see below), whose sum is σ = 1246966241760. Its totient is φ = 182831185920.

The previous prime is 505404522023. The next prime is 505404522061. The reversal of 505404522040 is 40225404505.

It is a junction number, because it is equal to n+sod(n) for n = 505404521993 and 505404522011.

It is a congruent number.

It is an unprimeable number.

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 in 15 ways as a sum of consecutive naturals, for example, 2890849 + ... + 3060688.

Almost surely, 2^505404522040 is an apocalyptic number.

It is an amenable number.

505404522040 is an abundant number, since it is smaller than the sum of its proper divisors (741561719720).

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

505404522040 is a wasteful number, since it uses less digits than its factorization.

505404522040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5951752 (or 5951748 counting only the distinct ones).

The product of its (nonzero) digits is 32000, while the sum is 31.

Adding to 505404522040 its reverse (40225404505), we get a palindrome (545629926545).

The spelling of 505404522040 in words is "five hundred five billion, four hundred four million, five hundred twenty-two thousand, forty".