2856628766550 has 288 divisors, whose sum is σ = 8298466364160. Its totient is φ = 644664096000.

The previous prime is 2856628766533. The next prime is 2856628766561. The reversal of 2856628766550 is 556678266582.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 35564935 + ... + 35645165.

It is an arithmetic number, because the mean of its divisors is an integer number (28814119320).

Almost surely, 2^{2856628766550} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2856628766550, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4149233182080).

2856628766550 is an abundant number, since it is smaller than the sum of its proper divisors (5441837597610).

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

2856628766550 is a wasteful number, since it uses less digits than its factorization.

2856628766550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80340 (or 80304 counting only the distinct ones).

The product of its (nonzero) digits is 290304000, while the sum is 66.

The spelling of 2856628766550 in words is "two trillion, eight hundred fifty-six billion, six hundred twenty-eight million, seven hundred sixty-six thousand, five hundred fifty".