1226766199999 has 4 divisors (see below), whose sum is σ = 1298928917664. Its totient is φ = 1154603482336.

The previous prime is 1226766199933. The next prime is 1226766200057. The reversal of 1226766199999 is 9999916676221.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1226766199999 - 2³¹ = 1224618716351 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1226766190999) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36081358807 + ... + 36081358840.

It is an arithmetic number, because the mean of its divisors is an integer number (324732229416).

Almost surely, 2^{1226766199999} is an apocalyptic number.

1226766199999 is a deficient number, since it is larger than the sum of its proper divisors (72162717665).

1226766199999 is an equidigital number, since it uses as much as digits as its factorization.

1226766199999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72162717664.

The product of its digits is 357128352, while the sum is 76.

The spelling of 1226766199999 in words is "one trillion, two hundred twenty-six billion, seven hundred sixty-six million, one hundred ninety-nine thousand, nine hundred ninety-nine".