4001143284665 has 16 divisors (see below), whose sum is σ = 4956376490496. Its totient is φ = 3097583328000.

The previous prime is 4001143284659. The next prime is 4001143284683. The reversal of 4001143284665 is 5664823411004.

It is not a de Polignac number, because 4001143284665 - 2¹⁸ = 4001143022521 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6493190 + ... + 7082640.

It is an arithmetic number, because the mean of its divisors is an integer number (309773530656).

Almost surely, 2^{4001143284665} is an apocalyptic number.

It is an amenable number.

4001143284665 is a deficient number, since it is larger than the sum of its proper divisors (955233205831).

4001143284665 is a wasteful number, since it uses less digits than its factorization.

4001143284665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 633280.

The product of its (nonzero) digits is 552960, while the sum is 44.

Adding to 4001143284665 its reverse (5664823411004), we get a palindrome (9665966695669).

The spelling of 4001143284665 in words is "four trillion, one billion, one hundred forty-three million, two hundred eighty-four thousand, six hundred sixty-five".