1011666532209 has 16 divisors (see below), whose sum is σ = 1375009413120. Its totient is φ = 661497080400.

The previous prime is 1011666532193. The next prime is 1011666532211. The reversal of 1011666532209 is 9022356661101.

1011666532209 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1011666532209 - 2⁴ = 1011666532193 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1011666532109) 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, 14098767 + ... + 14170340.

It is an arithmetic number, because the mean of its divisors is an integer number (85938088320).

Almost surely, 2^{1011666532209} is an apocalyptic number.

It is an amenable number.

1011666532209 is a deficient number, since it is larger than the sum of its proper divisors (363342880911).

1011666532209 is a wasteful number, since it uses less digits than its factorization.

1011666532209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28269340.

The product of its (nonzero) digits is 116640, while the sum is 42.

The spelling of 1011666532209 in words is "one trillion, eleven billion, six hundred sixty-six million, five hundred thirty-two thousand, two hundred nine".