1166611587929 has 16 divisors (see below), whose sum is σ = 1291962766080. Its totient is φ = 1049112570240.

The previous prime is 1166611587917. The next prime is 1166611587931. The reversal of 1166611587929 is 9297851166611.

It is a cyclic number.

It is not a de Polignac number, because 1166611587929 - 2⁴ = 1166611587913 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1166611580929) 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, 20208689 + ... + 20266334.

It is an arithmetic number, because the mean of its divisors is an integer number (80747672880).

Almost surely, 2^{1166611587929} is an apocalyptic number.

1166611587929 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

1166611587929 is a deficient number, since it is larger than the sum of its proper divisors (125351178151).

1166611587929 is a wasteful number, since it uses less digits than its factorization.

1166611587929 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40475120.

The product of its digits is 9797760, while the sum is 62.

The spelling of 1166611587929 in words is "one trillion, one hundred sixty-six billion, six hundred eleven million, five hundred eighty-seven thousand, nine hundred twenty-nine".