505405351504 has 20 divisors (see below), whose sum is σ = 979284312864. Its totient is φ = 252686819168.

The previous prime is 505405351457. The next prime is 505405351523. The reversal of 505405351504 is 405153504505.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 725932 + ... + 1240075.

Almost surely, 2^505405351504 is an apocalyptic number.

It is an amenable number.

505405351504 is a deficient number, since it is larger than the sum of its proper divisors (473878961360).

505405351504 is a wasteful number, since it uses less digits than its factorization.

505405351504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1982082 (or 1982076 counting only the distinct ones).

The product of its (nonzero) digits is 150000, while the sum is 37.

The spelling of 505405351504 in words is "five hundred five billion, four hundred five million, three hundred fifty-one thousand, five hundred four".