56535163644 has 24 divisors (see below), whose sum is σ = 132864417280. Its totient is φ = 18709478064.

The previous prime is 56535163609. The next prime is 56535163649. The reversal of 56535163644 is 44636153565.

It is a junction number, because it is equal to n+sod(n) for n = 56535163593 and 56535163602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56535163649) 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, 16945324 + ... + 16948659.

Almost surely, 2^56535163644 is an apocalyptic number.

It is an amenable number.

56535163644 is an abundant number, since it is smaller than the sum of its proper divisors (76329253636).

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

56535163644 is a wasteful number, since it uses less digits than its factorization.

56535163644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33894129 (or 33894127 counting only the distinct ones).

The product of its digits is 3888000, while the sum is 48.

The spelling of 56535163644 in words is "fifty-six billion, five hundred thirty-five million, one hundred sixty-three thousand, six hundred forty-four".