4001218881186 has 32 divisors (see below), whose sum is σ = 8055677380608. Its totient is φ = 1324866891600.

The previous prime is 4001218881173. The next prime is 4001218881221. The reversal of 4001218881186 is 6811888121004.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 55178125 + ... + 55250591.

It is an arithmetic number, because the mean of its divisors is an integer number (251739918144).

Almost surely, 2^{4001218881186} is an apocalyptic number.

4001218881186 is an abundant number, since it is smaller than the sum of its proper divisors (4054458499422).

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

4001218881186 is a wasteful number, since it uses less digits than its factorization.

4001218881186 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133566.

The product of its (nonzero) digits is 196608, while the sum is 48.

The spelling of 4001218881186 in words is "four trillion, one billion, two hundred eighteen million, eight hundred eighty-one thousand, one hundred eighty-six".