2144205121544 has 64 divisors (see below), whose sum is σ = 4271557420800. Its totient is φ = 1005561856000.

The previous prime is 2144205121543. The next prime is 2144205121621. The reversal of 2144205121544 is 4451215024412.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (2144205121543) 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 15 ways as a sum of consecutive naturals, for example, 78153509 + ... + 78180939.

It is an arithmetic number, because the mean of its divisors is an integer number (66743084700).

Almost surely, 2^{2144205121544} is an apocalyptic number.

It is an amenable number.

2144205121544 is a deficient number, since it is larger than the sum of its proper divisors (2127352299256).

2144205121544 is a wasteful number, since it uses less digits than its factorization.

2144205121544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29414 (or 29410 counting only the distinct ones).

The product of its (nonzero) digits is 51200, while the sum is 35.

The spelling of 2144205121544 in words is "two trillion, one hundred forty-four billion, two hundred five million, one hundred twenty-one thousand, five hundred forty-four".