1001117785178 has 16 divisors (see below), whose sum is σ = 1716502247424. Its totient is φ = 428975396880.

The previous prime is 1001117785139. The next prime is 1001117785201. The reversal of 1001117785178 is 8715877111001.

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, 6173978 + ... + 6334053.

It is an arithmetic number, because the mean of its divisors is an integer number (107281390464).

Almost surely, 2^{1001117785178} is an apocalyptic number.

1001117785178 is a deficient number, since it is larger than the sum of its proper divisors (715384462246).

1001117785178 is a wasteful number, since it uses less digits than its factorization.

1001117785178 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12513757.

The product of its (nonzero) digits is 109760, while the sum is 47.

The spelling of 1001117785178 in words is "one trillion, one billion, one hundred seventeen million, seven hundred eighty-five thousand, one hundred seventy-eight".