1166201555612 has 24 divisors (see below), whose sum is σ = 2042467721280. Its totient is φ = 582639518720.

The previous prime is 1166201555591. The next prime is 1166201555677. The reversal of 1166201555612 is 2165551026611.

It is a self number, because there is not a number n which added to its sum of digits gives 1166201555612.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 32253608 + ... + 32289744.

It is an arithmetic number, because the mean of its divisors is an integer number (85102821720).

Almost surely, 2^{1166201555612} is an apocalyptic number.

It is an amenable number.

1166201555612 is a deficient number, since it is larger than the sum of its proper divisors (876266165668).

1166201555612 is a wasteful number, since it uses less digits than its factorization.

1166201555612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42301 (or 42299 counting only the distinct ones).

The product of its (nonzero) digits is 108000, while the sum is 41.

The spelling of 1166201555612 in words is "one trillion, one hundred sixty-six billion, two hundred one million, five hundred fifty-five thousand, six hundred twelve".