2144555555 has 16 divisors (see below), whose sum is σ = 2771915520. Its totient is φ = 1587545568.

The previous prime is 2144555551. The next prime is 2144555579. The reversal of 2144555555 is 5555554412.

It is a cyclic number.

It is not a de Polignac number, because 2144555555 - 2² = 2144555551 is a prime.

2144555555 is a modest number, since divided by 55555 gives 21445 as remainder.

It is not an unprimeable number, because it can be changed into a prime (2144555551) 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, 258407 + ... + 266576.

It is an arithmetic number, because the mean of its divisors is an integer number (173244720).

Almost surely, 2^2144555555 is an apocalyptic number.

2144555555 is a deficient number, since it is larger than the sum of its proper divisors (627359965).

2144555555 is a wasteful number, since it uses less digits than its factorization.

2144555555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 525050.

The product of its digits is 500000, while the sum is 41.

The square root of 2144555555 is about 46309.3463028793. The cubic root of 2144555555 is about 1289.5725112370.

The spelling of 2144555555 in words is "two billion, one hundred forty-four million, five hundred fifty-five thousand, five hundred fifty-five".