56688888889 has 4 divisors (see below), whose sum is σ = 59672514640. Its totient is φ = 53705263140.

The previous prime is 56688888811. The next prime is 56688888899. The reversal of 56688888889 is 98888888665.

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 56688888889 - 2¹⁵ = 56688856121 is a prime.

It is a Duffinian number.

It is a plaindrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (56688888899) 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, 1491812847 + ... + 1491812884.

It is an arithmetic number, because the mean of its divisors is an integer number (14918128660).

Almost surely, 2^56688888889 is an apocalyptic number.

It is an amenable number.

56688888889 is a deficient number, since it is larger than the sum of its proper divisors (2983625751).

56688888889 is a wasteful number, since it uses less digits than its factorization.

56688888889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2983625750.

The product of its digits is 3397386240, while the sum is 82.

The spelling of 56688888889 in words is "fifty-six billion, six hundred eighty-eight million, eight hundred eighty-eight thousand, eight hundred eighty-nine".