2520545668 has 24 divisors (see below), whose sum is σ = 4437414072. Its totient is φ = 1252737024.

The previous prime is 2520545659. The next prime is 2520545669. The reversal of 2520545668 is 8665450252.

It can be written as a sum of positive squares in 4 ways, for example, as 376670464 + 2143875204 = 19408^2 + 46302^2 .

It is not an unprimeable number, because it can be changed into a prime (2520545669) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 473196 + ... + 478492.

It is an arithmetic number, because the mean of its divisors is an integer number (184892253).

Almost surely, 2^2520545668 is an apocalyptic number.

It is an amenable number.

2520545668 is a deficient number, since it is larger than the sum of its proper divisors (1916868404).

2520545668 is a wasteful number, since it uses less digits than its factorization.

2520545668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5991 (or 5989 counting only the distinct ones).

The product of its (nonzero) digits is 576000, while the sum is 43.

The square root of 2520545668 is about 50205.0362812338. The cubic root of 2520545668 is about 1360.9166376718.

The spelling of 2520545668 in words is "two billion, five hundred twenty million, five hundred forty-five thousand, six hundred sixty-eight".