505544643612 has 36 divisors (see below), whose sum is σ = 1277934614320. Its totient is φ = 168510912192.

The previous prime is 505544643607. The next prime is 505544643619. The reversal of 505544643612 is 216346445505.

505544643612 is a `hidden beast` number, since 5 + 0 + 5 + 544 + 6 + 43 + 61 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-3 number, since 3×505544643612³ (a number of 36 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (505544643619) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1660464 + ... + 1941192.

Almost surely, 2^505544643612 is an apocalyptic number.

It is an amenable number.

505544643612 is an abundant number, since it is smaller than the sum of its proper divisors (772389970708).

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

505544643612 is a wasteful number, since it uses less digits than its factorization.

505544643612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 330762 (or 330757 counting only the distinct ones).

The product of its (nonzero) digits is 1728000, while the sum is 45.

The spelling of 505544643612 in words is "five hundred five billion, five hundred forty-four million, six hundred forty-three thousand, six hundred twelve".