505549045656 has 32 divisors (see below), whose sum is σ = 1404302905200. Its totient is φ = 168516348480.

The previous prime is 505549045609. The next prime is 505549045679. The reversal of 505549045656 is 656540945505.

It is a happy number.

505549045656 is a `hidden beast` number, since 5 + 0 + 5 + 54 + 90 + 456 + 56 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1170252205 + ... + 1170252636.

Almost surely, 2^505549045656 is an apocalyptic number.

It is an amenable number.

505549045656 is an abundant number, since it is smaller than the sum of its proper divisors (898753859544).

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

505549045656 is a wasteful number, since it uses less digits than its factorization.

505549045656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2340504856 (or 2340504846 counting only the distinct ones).

The product of its (nonzero) digits is 16200000, while the sum is 54.

The spelling of 505549045656 in words is "five hundred five billion, five hundred forty-nine million, forty-five thousand, six hundred fifty-six".