1174726128889 has 2 divisors, whose sum is σ = 1174726128890. Its totient is φ = 1174726128888.

The previous prime is 1174726128869. The next prime is 1174726128913. The reversal of 1174726128889 is 9888216274711.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1165546956025 + 9179172864 = 1079605^2 + 95808^2 .

It is a cyclic number.

It is not a de Polignac number, because 1174726128889 - 2²³ = 1174717740281 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1174726128889.

It is not a weakly prime, because it can be changed into another prime (1174726128809) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 587363064444 + 587363064445.

It is an arithmetic number, because the mean of its divisors is an integer number (587363064445).

Almost surely, 2^{1174726128889} is an apocalyptic number.

It is an amenable number.

1174726128889 is a deficient number, since it is larger than the sum of its proper divisors (1).

1174726128889 is an equidigital number, since it uses as much as digits as its factorization.

1174726128889 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 21676032, while the sum is 64.

The spelling of 1174726128889 in words is "one trillion, one hundred seventy-four billion, seven hundred twenty-six million, one hundred twenty-eight thousand, eight hundred eighty-nine".