1227791766442 has 32 divisors (see below), whose sum is σ = 1910439432000. Its totient is φ = 591420348288.

The previous prime is 1227791766437. The next prime is 1227791766457. The reversal of 1227791766442 is 2446671977221.

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 15 ways as a sum of consecutive naturals, for example, 1815934 + ... + 2398582.

It is an arithmetic number, because the mean of its divisors is an integer number (59701232250).

Almost surely, 2^{1227791766442} is an apocalyptic number.

1227791766442 is a deficient number, since it is larger than the sum of its proper divisors (682647665558).

1227791766442 is a wasteful number, since it uses less digits than its factorization.

1227791766442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 583030.

The product of its digits is 14224896, while the sum is 58.

The spelling of 1227791766442 in words is "one trillion, two hundred twenty-seven billion, seven hundred ninety-one million, seven hundred sixty-six thousand, four hundred forty-two".