2108666736 has 320 divisors, whose sum is σ = 6899558400. Its totient is φ = 611020800.

The previous prime is 2108666713. The next prime is 2108666743. The reversal of 2108666736 is 6376668012.

It is a junction number, because it is equal to n+sod(n) for n = 2108666691 and 2108666700.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 15391660 + ... + 15391796.

It is an arithmetic number, because the mean of its divisors is an integer number (21561120).

Almost surely, 2^2108666736 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 2108666736, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3449779200).

2108666736 is an abundant number, since it is smaller than the sum of its proper divisors (4790891664).

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

2108666736 is a wasteful number, since it uses less digits than its factorization.

2108666736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 285 (or 273 counting only the distinct ones).

The product of its (nonzero) digits is 435456, while the sum is 45.

The square root of 2108666736 is about 45920.2214280376. The cubic root of 2108666736 is about 1282.3384044542.

The spelling of 2108666736 in words is "two billion, one hundred eight million, six hundred sixty-six thousand, seven hundred thirty-six".