1226633661788 has 24 divisors (see below), whose sum is σ = 2158383949344. Its totient is φ = 609960915200.

The previous prime is 1226633661763. The next prime is 1226633661821. The reversal of 1226633661788 is 8871663366221.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 461720 + ... + 1632927.

It is an arithmetic number, because the mean of its divisors is an integer number (89932664556).

Almost surely, 2^{1226633661788} is an apocalyptic number.

It is an amenable number.

1226633661788 is a deficient number, since it is larger than the sum of its proper divisors (931750287556).

1226633661788 is a wasteful number, since it uses less digits than its factorization.

1226633661788 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2095453 (or 2095451 counting only the distinct ones).

The product of its digits is 20901888, while the sum is 59.

The spelling of 1226633661788 in words is "one trillion, two hundred twenty-six billion, six hundred thirty-three million, six hundred sixty-one thousand, seven hundred eighty-eight".