1269228666863 has 12 divisors (see below), whose sum is σ = 1357667933160. Its totient is φ = 1185811190256.

The previous prime is 1269228666841. The next prime is 1269228666931. The reversal of 1269228666863 is 3686668229621.

It is not a de Polignac number, because 1269228666863 - 2¹⁴ = 1269228650479 is a prime.

It is a super-2 number, since 2×1269228666863² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1269228666863.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1269228666803) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 27876068 + ... + 27921561.

It is an arithmetic number, because the mean of its divisors is an integer number (113138994430).

Almost surely, 2^{1269228666863} is an apocalyptic number.

1269228666863 is a deficient number, since it is larger than the sum of its proper divisors (88439266297).

1269228666863 is an equidigital number, since it uses as much as digits as its factorization.

1269228666863 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55797718 (or 55797695 counting only the distinct ones).

The product of its digits is 107495424, while the sum is 65.

The spelling of 1269228666863 in words is "one trillion, two hundred sixty-nine billion, two hundred twenty-eight million, six hundred sixty-six thousand, eight hundred sixty-three".