53646433464636 has 144 divisors (see below), whose sum is σ = 136842644090880. Its totient is φ = 17719908762240.

The previous prime is 53646433464601. The next prime is 53646433464703. The reversal of 53646433464636 is 63646433464635.

53646433464636 is a `hidden beast` number, since 5 + 36 + 46 + 43 + 3 + 464 + 63 + 6 = 666.

It is a super-2 number, since 2×53646433464636² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 3398131935 + ... + 3398147721.

It is an arithmetic number, because the mean of its divisors is an integer number (950296139520).

Almost surely, 2^{53646433464636} is an apocalyptic number.

It is an amenable number.

53646433464636 is an abundant number, since it is smaller than the sum of its proper divisors (83196210626244).

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

53646433464636 is a wasteful number, since it uses less digits than its factorization.

53646433464636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17864 (or 17859 counting only the distinct ones).

The product of its digits is 806215680, while the sum is 63.

Subtracting 53646433464636 from its reverse (63646433464635), we obtain a palindrome (9999999999999).

The spelling of 53646433464636 in words is "fifty-three trillion, six hundred forty-six billion, four hundred thirty-three million, four hundred sixty-four thousand, six hundred thirty-six".