55443000636 has 24 divisors (see below), whose sum is σ = 143741113040. Its totient is φ = 18481000176.

The previous prime is 55443000527. The next prime is 55443000637. The reversal of 55443000636 is 63600034455.

55443000636 is a `hidden beast` number, since 554 + 43 + 0 + 0 + 0 + 63 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 55443000636.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55443000637) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 256680451 + ... + 256680666.

Almost surely, 2^55443000636 is an apocalyptic number.

It is an amenable number.

55443000636 is an abundant number, since it is smaller than the sum of its proper divisors (88298112404).

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

55443000636 is a wasteful number, since it uses less digits than its factorization.

55443000636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 513361130 (or 513361122 counting only the distinct ones).

The product of its (nonzero) digits is 129600, while the sum is 36.

The spelling of 55443000636 in words is "fifty-five billion, four hundred forty-three million, six hundred thirty-six", and thus it is an aban number.