505405463256 has 24 divisors (see below), whose sum is σ = 1368806463180. Its totient is φ = 168468487728.

The previous prime is 505405463153. The next prime is 505405463281. The reversal of 505405463256 is 652364504505.

505405463256 is a `hidden beast` number, since 5 + 0 + 5 + 4 + 0 + 5 + 4 + 632 + 5 + 6 = 666.

It is a tau number, because it is divible by the number of its divisors (24).

It is a super-2 number, since 2×505405463256² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3509760090 + ... + 3509760233.

Almost surely, 2^505405463256 is an apocalyptic number.

It is an amenable number.

505405463256 is an abundant number, since it is smaller than the sum of its proper divisors (863400999924).

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

505405463256 is a wasteful number, since it uses less digits than its factorization.

505405463256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7019520335 (or 7019520328 counting only the distinct ones).

The product of its (nonzero) digits is 2160000, while the sum is 45.

The spelling of 505405463256 in words is "five hundred five billion, four hundred five million, four hundred sixty-three thousand, two hundred fifty-six".