2555581776 has 160 divisors (see below), whose sum is σ = 7617369600. Its totient is φ = 730160640.

The previous prime is 2555581759. The next prime is 2555581781. The reversal of 2555581776 is 6771855552.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2698135 + ... + 2699081.

It is an arithmetic number, because the mean of its divisors is an integer number (47608560).

Almost surely, 2^2555581776 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 2555581776, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3808684800).

2555581776 is an abundant number, since it is smaller than the sum of its proper divisors (5061787824).

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

2555581776 is a wasteful number, since it uses less digits than its factorization.

2555581776 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1257 (or 1251 counting only the distinct ones).

The product of its digits is 2940000, while the sum is 51.

The square root of 2555581776 is about 50552.7622984145. The cubic root of 2555581776 is about 1367.1933190825.

The spelling of 2555581776 in words is "two billion, five hundred fifty-five million, five hundred eighty-one thousand, seven hundred seventy-six".