2055768640 has 28 divisors (see below), whose sum is σ = 4895299836. Its totient is φ = 822307328.

The previous prime is 2055768629. The next prime is 2055768641. The reversal of 2055768640 is 468675502.

It can be written as a sum of positive squares in 2 ways, for example, as 1237350976 + 818417664 = 35176^2 + 28608^2 .

It is not an unprimeable number, because it can be changed into a prime (2055768641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3211819 + ... + 3212458.

It is an arithmetic number, because the mean of its divisors is an integer number (174832137).

Almost surely, 2^2055768640 is an apocalyptic number.

2055768640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2055768640 is an abundant number, since it is smaller than the sum of its proper divisors (2839531196).

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

2055768640 is an equidigital number, since it uses as much as digits as its factorization.

2055768640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6424294 (or 6424284 counting only the distinct ones).

The product of its (nonzero) digits is 403200, while the sum is 43.

The square root of 2055768640 is about 45340.5849102104. The cubic root of 2055768640 is about 1271.5245378294.

The spelling of 2055768640 in words is "two billion, fifty-five million, seven hundred sixty-eight thousand, six hundred forty".