2106559812 has 96 divisors (see below), whose sum is σ = 5678982400. Its totient is φ = 595330560.

The previous prime is 2106559801. The next prime is 2106559823. The reversal of 2106559812 is 2189556012.

It is an interprime number because it is at equal distance from previous prime (2106559801) and next prime (2106559823).

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 5305998 + ... + 5306394.

Almost surely, 2^2106559812 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2106559812, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2839491200).

2106559812 is an abundant number, since it is smaller than the sum of its proper divisors (3572422588).

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

2106559812 is a wasteful number, since it uses less digits than its factorization.

2106559812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 941 (or 939 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 39.

The square root of 2106559812 is about 45897.2745596076. The cubic root of 2106559812 is about 1281.9111692624.

The spelling of 2106559812 in words is "two billion, one hundred six million, five hundred fifty-nine thousand, eight hundred twelve".