1226816125726 has 16 divisors (see below), whose sum is σ = 1887551376480. Its totient is φ = 597816845280.

The previous prime is 1226816125669. The next prime is 1226816125747. The reversal of 1226816125726 is 6275216186221.

It is a super-4 number, since 4×1226816125726⁴ (a number of 49 digits) contains 4444 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1226816125726.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 46114546 + ... + 46141141.

It is an arithmetic number, because the mean of its divisors is an integer number (117971961030).

Almost surely, 2^{1226816125726} is an apocalyptic number.

1226816125726 is a deficient number, since it is larger than the sum of its proper divisors (660735250754).

1226816125726 is a wasteful number, since it uses less digits than its factorization.

1226816125726 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92255859.

The product of its digits is 967680, while the sum is 49.

The spelling of 1226816125726 in words is "one trillion, two hundred twenty-six billion, eight hundred sixteen million, one hundred twenty-five thousand, seven hundred twenty-six".