1166066634545 has 8 divisors (see below), whose sum is σ = 1401955452096. Its totient is φ = 931069647216.

The previous prime is 1166066634511. The next prime is 1166066634559. The reversal of 1166066634545 is 5454366606611.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1166066634545 is a prime.

It is a super-2 number, since 2×1166066634545² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 222954677 + ... + 222959906.

It is an arithmetic number, because the mean of its divisors is an integer number (175244431512).

Almost surely, 2^{1166066634545} is an apocalyptic number.

It is an amenable number.

1166066634545 is a deficient number, since it is larger than the sum of its proper divisors (235888817551).

1166066634545 is an equidigital number, since it uses as much as digits as its factorization.

1166066634545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 445915111.

The product of its (nonzero) digits is 9331200, while the sum is 53.

The spelling of 1166066634545 in words is "one trillion, one hundred sixty-six billion, sixty-six million, six hundred thirty-four thousand, five hundred forty-five".