1122779750555 has 16 divisors (see below), whose sum is σ = 1348003827264. Its totient is φ = 897778529280.

The previous prime is 1122779750551. The next prime is 1122779750557. The reversal of 1122779750555 is 5550579772211.

It is a happy number.

It is not a de Polignac number, because 1122779750555 - 2² = 1122779750551 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1122779750555.

It is not an unprimeable number, because it can be changed into a prime (1122779750551) 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 15 ways as a sum of consecutive naturals, for example, 161292275 + ... + 161299235.

It is an arithmetic number, because the mean of its divisors is an integer number (84250239204).

Almost surely, 2^{1122779750555} is an apocalyptic number.

1122779750555 is a deficient number, since it is larger than the sum of its proper divisors (225224076709).

1122779750555 is an equidigital number, since it uses as much as digits as its factorization.

1122779750555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18326.

The product of its (nonzero) digits is 7717500, while the sum is 56.

The spelling of 1122779750555 in words is "one trillion, one hundred twenty-two billion, seven hundred seventy-nine million, seven hundred fifty thousand, five hundred fifty-five".