1101261666 has 96 divisors (see below), whose sum is σ = 2492270208. Its totient is φ = 323614720.

The previous prime is 1101261611. The next prime is 1101261697. The reversal of 1101261666 is 6661621011.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2113486 + ... + 2114006.

It is an arithmetic number, because the mean of its divisors is an integer number (25961148).

Almost surely, 2^1101261666 is an apocalyptic number.

1101261666 is an abundant number, since it is smaller than the sum of its proper divisors (1391008542).

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

1101261666 is a wasteful number, since it uses less digits than its factorization.

1101261666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 636 (or 619 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 30.

The square root of 1101261666 is about 33185.2627833501. The cubic root of 1101261666 is about 1032.6746291250.

Adding to 1101261666 its reverse (6661621011), we get a palindrome (7762882677).

The spelling of 1101261666 in words is "one billion, one hundred one million, two hundred sixty-one thousand, six hundred sixty-six".