1266122411993 has 16 divisors (see below), whose sum is σ = 1315782558720. Its totient is φ = 1216872049344.

The previous prime is 1266122411927. The next prime is 1266122412173. The reversal of 1266122411993 is 3991142216621.

It is a cyclic number.

It is not a de Polignac number, because 1266122411993 - 2⁸ = 1266122411737 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1266122111993) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7246580 + ... + 7419242.

It is an arithmetic number, because the mean of its divisors is an integer number (82236409920).

Almost surely, 2^{1266122411993} is an apocalyptic number.

It is an amenable number.

1266122411993 is a deficient number, since it is larger than the sum of its proper divisors (49660146727).

1266122411993 is a wasteful number, since it uses less digits than its factorization.

1266122411993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173848.

The product of its digits is 279936, while the sum is 47.

The spelling of 1266122411993 in words is "one trillion, two hundred sixty-six billion, one hundred twenty-two million, four hundred eleven thousand, nine hundred ninety-three".