2544665541 has 16 divisors (see below), whose sum is σ = 3703449600. Its totient is φ = 1541339120.

The previous prime is 2544665531. The next prime is 2544665549. The reversal of 2544665541 is 1455664452.

2544665541 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 2544665541 - 2⁵ = 2544665509 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2544665493 and 2544665502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2544665549) 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, 39010 + ... + 81308.

It is an arithmetic number, because the mean of its divisors is an integer number (231465600).

Almost surely, 2^2544665541 is an apocalyptic number.

It is an amenable number.

2544665541 is a deficient number, since it is larger than the sum of its proper divisors (1158784059).

2544665541 is a wasteful number, since it uses less digits than its factorization.

2544665541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44136.

The product of its digits is 576000, while the sum is 42.

The square root of 2544665541 is about 50444.6780245449. The cubic root of 2544665541 is about 1365.2438732912.

The spelling of 2544665541 in words is "two billion, five hundred forty-four million, six hundred sixty-five thousand, five hundred forty-one".