505213532656 has 40 divisors (see below), whose sum is σ = 1132165286784. Its totient is φ = 213911405760.

The previous prime is 505213532633. The next prime is 505213532657. The reversal of 505213532656 is 656235312505.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (505213532657) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27164410 + ... + 27183001.

Almost surely, 2^505213532656 is an apocalyptic number.

505213532656 is a gapful number since it is divisible by the number (56) formed by its first and last digit.

It is an amenable number.

505213532656 is an abundant number, since it is smaller than the sum of its proper divisors (626951754128).

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

505213532656 is a wasteful number, since it uses less digits than its factorization.

505213532656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54347509 (or 54347503 counting only the distinct ones).

The product of its (nonzero) digits is 810000, while the sum is 43.

The spelling of 505213532656 in words is "five hundred five billion, two hundred thirteen million, five hundred thirty-two thousand, six hundred fifty-six".