1166549069665 has 32 divisors (see below), whose sum is σ = 1630900417536. Its totient is φ = 784404741120.

The previous prime is 1166549069617. The next prime is 1166549069753. The reversal of 1166549069665 is 5669609456611.

It is not a de Polignac number, because 1166549069665 - 2¹⁷ = 1166548938593 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1166549069597 and 1166549069606.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3302649 + ... + 3638761.

It is an arithmetic number, because the mean of its divisors is an integer number (50965638048).

Almost surely, 2^{1166549069665} is an apocalyptic number.

It is an amenable number.

1166549069665 is a deficient number, since it is larger than the sum of its proper divisors (464351347871).

1166549069665 is a wasteful number, since it uses less digits than its factorization.

1166549069665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 338049.

The product of its (nonzero) digits is 62985600, while the sum is 64.

The spelling of 1166549069665 in words is "one trillion, one hundred sixty-six billion, five hundred forty-nine million, sixty-nine thousand, six hundred sixty-five".