1226381763771 has 6 divisors (see below), whose sum is σ = 1771440325460. Its totient is φ = 817587842508.

The previous prime is 1226381763757. The next prime is 1226381763779. The reversal of 1226381763771 is 1773671836221.

1226381763771 is a `hidden beast` number, since 1 + 2 + 263 + 8 + 1 + 7 + 6 + 377 + 1 = 666.

It is not a de Polignac number, because 1226381763771 - 2¹³ = 1226381755579 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1226381763779) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 68132320201 + ... + 68132320218.

Almost surely, 2^{1226381763771} is an apocalyptic number.

1226381763771 is a deficient number, since it is larger than the sum of its proper divisors (545058561689).

1226381763771 is a wasteful number, since it uses less digits than its factorization.

1226381763771 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136264640425 (or 136264640422 counting only the distinct ones).

The product of its digits is 3556224, while the sum is 54.

The spelling of 1226381763771 in words is "one trillion, two hundred twenty-six billion, three hundred eighty-one million, seven hundred sixty-three thousand, seven hundred seventy-one".