505405321546 has 16 divisors (see below), whose sum is σ = 765749395008. Its totient is φ = 250157325600.

The previous prime is 505405321543. The next prime is 505405321559. The reversal of 505405321546 is 645123504505.

It is a junction number, because it is equal to n+sod(n) for n = 505405321499 and 505405321508.

It is not an unprimeable number, because it can be changed into a prime (505405321543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 113406 + ... + 1011766.

It is an arithmetic number, because the mean of its divisors is an integer number (47859337188).

Almost surely, 2^505405321546 is an apocalyptic number.

505405321546 is a deficient number, since it is larger than the sum of its proper divisors (260344073462).

505405321546 is a wasteful number, since it uses less digits than its factorization.

505405321546 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 901197.

The product of its (nonzero) digits is 360000, while the sum is 40.

The spelling of 505405321546 in words is "five hundred five billion, four hundred five million, three hundred twenty-one thousand, five hundred forty-six".