1172227784450 has 12 divisors (see below), whose sum is σ = 2180343679170. Its totient is φ = 468891113760.

The previous prime is 1172227784417. The next prime is 1172227784459. The reversal of 1172227784450 is 544877222711.

It can be written as a sum of positive squares in 3 ways, for example, as 1128198735889 + 44029048561 = 1062167^2 + 209831^2 .

It is a Harshad number since it is a multiple of its sum of digits (50), and also a Moran number because the ratio is a prime number: 23444555689 = 1172227784450 / (1 + 1 + 7 + 2 + 2 + 2 + 7 + 7 + 8 + 4 + 4 + 5 + 0).

It is not an unprimeable number, because it can be changed into a prime (1172227784459) 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, 11722277795 + ... + 11722277894.

Almost surely, 2^{1172227784450} is an apocalyptic number.

1172227784450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1172227784450 is a deficient number, since it is larger than the sum of its proper divisors (1008115894720).

1172227784450 is a wasteful number, since it uses less digits than its factorization.

1172227784450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23444555701 (or 23444555696 counting only the distinct ones).

The product of its (nonzero) digits is 1756160, while the sum is 50.

The spelling of 1172227784450 in words is "one trillion, one hundred seventy-two billion, two hundred twenty-seven million, seven hundred eighty-four thousand, four hundred fifty".