1266541102115 has 16 divisors (see below), whose sum is σ = 1527387479040. Its totient is φ = 1008209553120.

The previous prime is 1266541102111. The next prime is 1266541102117. The reversal of 1266541102115 is 5112011456621.

It is not a de Polignac number, because 1266541102115 - 2² = 1266541102111 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1266541102111) 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, 4764752 + ... + 5023538.

It is an arithmetic number, because the mean of its divisors is an integer number (95461717440).

Almost surely, 2^{1266541102115} is an apocalyptic number.

1266541102115 is a deficient number, since it is larger than the sum of its proper divisors (260846376925).

1266541102115 is a wasteful number, since it uses less digits than its factorization.

1266541102115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 263642.

The product of its (nonzero) digits is 14400, while the sum is 35.

Adding to 1266541102115 its reverse (5112011456621), we get a palindrome (6378552558736).

The spelling of 1266541102115 in words is "one trillion, two hundred sixty-six billion, five hundred forty-one million, one hundred two thousand, one hundred fifteen".