4001143284666 has 48 divisors (see below), whose sum is σ = 9635686426080. Its totient is φ = 1189590910560.

The previous prime is 4001143284659. The next prime is 4001143284683. The reversal of 4001143284666 is 6664823411004.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 190629076 + ... + 190650063.

It is an arithmetic number, because the mean of its divisors is an integer number (200743467210).

Almost surely, 2^{4001143284666} is an apocalyptic number.

4001143284666 is an abundant number, since it is smaller than the sum of its proper divisors (5634543141414).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

4001143284666 is a wasteful number, since it uses less digits than its factorization.

4001143284666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 381279211 (or 381279208 counting only the distinct ones).

The product of its (nonzero) digits is 663552, while the sum is 45.

The spelling of 4001143284666 in words is "four trillion, one billion, one hundred forty-three million, two hundred eighty-four thousand, six hundred sixty-six".