1266051160 has 128 divisors (see below), whose sum is σ = 3243110400. Its totient is φ = 440640000.

The previous prime is 1266051139. The next prime is 1266051179. The reversal of 1266051160 is 611506621.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1377181 + ... + 1378099.

It is an arithmetic number, because the mean of its divisors is an integer number (25336800).

Almost surely, 2^1266051160 is an apocalyptic number.

1266051160 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1266051160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1621555200).

1266051160 is an abundant number, since it is smaller than the sum of its proper divisors (1977059240).

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

1266051160 is a wasteful number, since it uses less digits than its factorization.

1266051160 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1073 (or 1069 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 28.

The square root of 1266051160 is about 35581.6126672190. The cubic root of 1266051160 is about 1081.8085723190.

Adding to 1266051160 its reverse (611506621), we get a palindrome (1877557781).

It can be divided in two parts, 126605 and 1160, that added together give a triangular number (127765 = T₅₀₅).

The spelling of 1266051160 in words is "one billion, two hundred sixty-six million, fifty-one thousand, one hundred sixty".