2656111806 has 96 divisors (see below), whose sum is σ = 6344312832. Its totient is φ = 800331840.

The previous prime is 2656111793. The next prime is 2656111813. The reversal of 2656111806 is 6081116562.

2656111806 is a `hidden beast` number, since 2 + 6 + 561 + 11 + 80 + 6 = 666.

2656111806 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 549456 + ... + 554268.

It is an arithmetic number, because the mean of its divisors is an integer number (66086592).

Almost surely, 2^2656111806 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2656111806, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3172156416).

2656111806 is an abundant number, since it is smaller than the sum of its proper divisors (3688201026).

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

2656111806 is a wasteful number, since it uses less digits than its factorization.

2656111806 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4918 (or 4915 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 36.

The square root of 2656111806 is about 51537.4796240561. The cubic root of 2656111806 is about 1384.8905465946.

The spelling of 2656111806 in words is "two billion, six hundred fifty-six million, one hundred eleven thousand, eight hundred six".