2544621266 has 64 divisors (see below), whose sum is σ = 4411791360. Its totient is φ = 1090464960.

The previous prime is 2544621263. The next prime is 2544621271. The reversal of 2544621266 is 6621264452.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2544621263) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3232925 + ... + 3233711.

It is an arithmetic number, because the mean of its divisors is an integer number (68934240).

Almost surely, 2^2544621266 is an apocalyptic number.

2544621266 is a deficient number, since it is larger than the sum of its proper divisors (1867170094).

2544621266 is a wasteful number, since it uses less digits than its factorization.

2544621266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 959.

The product of its digits is 138240, while the sum is 38.

The square root of 2544621266 is about 50444.2391755491. The cubic root of 2544621266 is about 1365.2359552207.

The spelling of 2544621266 in words is "two billion, five hundred forty-four million, six hundred twenty-one thousand, two hundred sixty-six".