2055288780 has 144 divisors (see below), whose sum is σ = 6666214464. Its totient is φ = 510750720.

The previous prime is 2055288773. The next prime is 2055288791. The reversal of 2055288780 is 878825502.

2055288780 is a `hidden beast` number, since 20 + 552 + 8 + 8 + 78 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

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, 311920 + ... + 318440.

It is an arithmetic number, because the mean of its divisors is an integer number (46293156).

Almost surely, 2^2055288780 is an apocalyptic number.

2055288780 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2055288780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3333107232).

2055288780 is an abundant number, since it is smaller than the sum of its proper divisors (4610925684).

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

2055288780 is a wasteful number, since it uses less digits than its factorization.

2055288780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6656 (or 6651 counting only the distinct ones).

The product of its (nonzero) digits is 358400, while the sum is 45.

The square root of 2055288780 is about 45335.2928743159. The cubic root of 2055288780 is about 1271.4255965327.

The spelling of 2055288780 in words is "two billion, fifty-five million, two hundred eighty-eight thousand, seven hundred eighty".