1066135253166 has 32 divisors (see below), whose sum is σ = 2369414926080. Its totient is φ = 355344596568.

The previous prime is 1066135253159. The next prime is 1066135253167. The reversal of 1066135253166 is 6613525316601.

It is a happy number.

1066135253166 is a `hidden beast` number, since 1 + 0 + 6 + 6 + 1 + 3 + 52 + 531 + 66 = 666.

It is a super-2 number, since 2×1066135253166² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1066135253167) 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, 363576 + ... + 1504811.

It is an arithmetic number, because the mean of its divisors is an integer number (74044216440).

Almost surely, 2^{1066135253166} is an apocalyptic number.

1066135253166 is an abundant number, since it is smaller than the sum of its proper divisors (1303279672914).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1066135253166 is a wasteful number, since it uses less digits than its factorization.

1066135253166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1878965 (or 1878959 counting only the distinct ones).

The product of its (nonzero) digits is 583200, while the sum is 45.

The spelling of 1066135253166 in words is "one trillion, sixty-six billion, one hundred thirty-five million, two hundred fifty-three thousand, one hundred sixty-six".