1166857307798 has 128 divisors (see below), whose sum is σ = 2260521768960. Its totient is φ = 439064524800.

The previous prime is 1166857307789. The next prime is 1166857307879. The reversal of 1166857307798 is 8977037586611.

It is a happy number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 652969061 + ... + 652970847.

It is an arithmetic number, because the mean of its divisors is an integer number (17660326320).

Almost surely, 2^{1166857307798} is an apocalyptic number.

1166857307798 is a deficient number, since it is larger than the sum of its proper divisors (1093664461162).

1166857307798 is a wasteful number, since it uses less digits than its factorization.

1166857307798 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2622.

The product of its (nonzero) digits is 106686720, while the sum is 68.

The spelling of 1166857307798 in words is "one trillion, one hundred sixty-six billion, eight hundred fifty-seven million, three hundred seven thousand, seven hundred ninety-eight".