56442443513 has 4 divisors (see below), whose sum is σ = 56481998160. Its totient is φ = 56402888868.

The previous prime is 56442443507. The next prime is 56442443521. The reversal of 56442443513 is 31534424465.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 56442443513 - 2²⁰ = 56441394937 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56442443593) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19775183 + ... + 19778036.

It is an arithmetic number, because the mean of its divisors is an integer number (14120499540).

Almost surely, 2^56442443513 is an apocalyptic number.

It is an amenable number.

56442443513 is a deficient number, since it is larger than the sum of its proper divisors (39554647).

56442443513 is a wasteful number, since it uses less digits than its factorization.

56442443513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39554646.

The product of its digits is 691200, while the sum is 41.

Adding to 56442443513 its reverse (31534424465), we get a palindrome (87976867978).

The spelling of 56442443513 in words is "fifty-six billion, four hundred forty-two million, four hundred forty-three thousand, five hundred thirteen".