1155100066 has 12 divisors (see below), whose sum is σ = 1811259702. Its totient is φ = 552438656.

The previous prime is 1155100061. The next prime is 1155100109. The reversal of 1155100066 is 6600015511.

It can be written as a sum of positive squares in only one way, i.e., 1154028841 + 1071225 = 33971^2 + 1035^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1155100066.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1155100061) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 544831 + ... + 546946.

Almost surely, 2^1155100066 is an apocalyptic number.

1155100066 is a deficient number, since it is larger than the sum of its proper divisors (656159636).

1155100066 is a wasteful number, since it uses less digits than its factorization.

1155100066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1091825 (or 1091802 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 25.

The square root of 1155100066 is about 33986.7630997717. The cubic root of 1155100066 is about 1049.2360477803.

Adding to 1155100066 its reverse (6600015511), we get a palindrome (7755115577).

The spelling of 1155100066 in words is "one billion, one hundred fifty-five million, one hundred thousand, sixty-six".