1001166555696 has 40 divisors (see below), whose sum is σ = 2621776354800. Its totient is φ = 329150647296.

The previous prime is 1001166555679. The next prime is 1001166555731. The reversal of 1001166555696 is 6965556611001.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 142857021 + ... + 142864028.

It is an arithmetic number, because the mean of its divisors is an integer number (65544408870).

Almost surely, 2^{1001166555696} is an apocalyptic number.

1001166555696 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1001166555696 is an abundant number, since it is smaller than the sum of its proper divisors (1620609799104).

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

1001166555696 is a wasteful number, since it uses less digits than its factorization.

1001166555696 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 285721133 (or 285721127 counting only the distinct ones).

The product of its (nonzero) digits is 1458000, while the sum is 51.

The spelling of 1001166555696 in words is "one trillion, one billion, one hundred sixty-six million, five hundred fifty-five thousand, six hundred ninety-six".