1011166433125 has 10 divisors (see below), whose sum is σ = 1263553575614. Its totient is φ = 808933146000.

The previous prime is 1011166433117. The next prime is 1011166433159. The reversal of 1011166433125 is 5213346611101.

It can be written as a sum of positive squares in 5 ways, for example, as 698844168961 + 312322264164 = 835969^2 + 558858^2 .

It is not a de Polignac number, because 1011166433125 - 2³ = 1011166433117 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 808932522 + ... + 808933771.

Almost surely, 2^{1011166433125} is an apocalyptic number.

It is an amenable number.

1011166433125 is a deficient number, since it is larger than the sum of its proper divisors (252387142489).

1011166433125 is an frugal number, since it uses more digits than its factorization.

1011166433125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1617866313 (or 1617866298 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 34.

The spelling of 1011166433125 in words is "one trillion, eleven billion, one hundred sixty-six million, four hundred thirty-three thousand, one hundred twenty-five".