2660544020 has 48 divisors (see below), whose sum is σ = 5653903248. Its totient is φ = 1051545600.

The previous prime is 2660544011. The next prime is 2660544023. The reversal of 2660544020 is 204450662.

It can be written as a sum of positive squares in 8 ways, for example, as 192044164 + 2468499856 = 13858^2 + 49684^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2660544023) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1318052 + ... + 1320068.

It is an arithmetic number, because the mean of its divisors is an integer number (117789651).

Almost surely, 2^2660544020 is an apocalyptic number.

2660544020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2660544020 is an abundant number, since it is smaller than the sum of its proper divisors (2993359228).

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

2660544020 is a wasteful number, since it uses less digits than its factorization.

2660544020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2780 (or 2778 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 29.

The square root of 2660544020 is about 51580.4616109627. The cubic root of 2660544020 is about 1385.6604338930.

Adding to 2660544020 its reverse (204450662), we get a palindrome (2864994682).

The spelling of 2660544020 in words is "two billion, six hundred sixty million, five hundred forty-four thousand, twenty".