56281498809 has 4 divisors (see below), whose sum is σ = 75041998416. Its totient is φ = 37520999204.

The previous prime is 56281498753. The next prime is 56281498811. The reversal of 56281498809 is 90889418265.

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 a de Polignac number, because none of the positive numbers 2^k-56281498809 is a prime.

It is not an unprimeable number, because it can be changed into a prime (56281498879) 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 3 ways as a sum of consecutive naturals, for example, 9380249799 + ... + 9380249804.

It is an arithmetic number, because the mean of its divisors is an integer number (18760499604).

Almost surely, 2^56281498809 is an apocalyptic number.

It is an amenable number.

56281498809 is a deficient number, since it is larger than the sum of its proper divisors (18760499607).

56281498809 is a wasteful number, since it uses less digits than its factorization.

56281498809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18760499606.

The product of its (nonzero) digits is 9953280, while the sum is 60.

The spelling of 56281498809 in words is "fifty-six billion, two hundred eighty-one million, four hundred ninety-eight thousand, eight hundred nine".