1166465966511 has 16 divisors (see below), whose sum is σ = 1597604699264. Its totient is φ = 756493025184.

The previous prime is 1166465966489. The next prime is 1166465966551. The reversal of 1166465966511 is 1156695646611.

It is a happy number.

It is not a de Polignac number, because 1166465966511 - 2⁶ = 1166465966447 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1166465966551) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 293761 + ... + 1555386.

It is an arithmetic number, because the mean of its divisors is an integer number (99850293704).

Almost surely, 2^{1166465966511} is an apocalyptic number.

1166465966511 is a deficient number, since it is larger than the sum of its proper divisors (431138732753).

1166465966511 is a wasteful number, since it uses less digits than its factorization.

1166465966511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1854870.

The product of its digits is 6998400, while the sum is 57.

The spelling of 1166465966511 in words is "one trillion, one hundred sixty-six billion, four hundred sixty-five million, nine hundred sixty-six thousand, five hundred eleven".