1266220441170 has 48 divisors (see below), whose sum is σ = 3292375813272. Its totient is φ = 337637998080.

The previous prime is 1266220441169. The next prime is 1266220441177. The reversal of 1266220441170 is 711440226621.

1266220441170 is a `hidden beast` number, since 1 + 26 + 6 + 2 + 20 + 441 + 170 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 446465848761 + 819754592409 = 668181^2 + 905403^2 .

It is not an unprimeable number, because it can be changed into a prime (1266220441177) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1065724 + ... + 1915256.

Almost surely, 2^{1266220441170} is an apocalyptic number.

1266220441170 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1266220441170 is an abundant number, since it is smaller than the sum of its proper divisors (2026155372102).

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

1266220441170 is a wasteful number, since it uses less digits than its factorization.

1266220441170 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 866107 (or 866104 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 36.

Adding to 1266220441170 its reverse (711440226621), we get a palindrome (1977660667791).

The spelling of 1266220441170 in words is "one trillion, two hundred sixty-six billion, two hundred twenty million, four hundred forty-one thousand, one hundred seventy".