1121854377641 has 2 divisors, whose sum is σ = 1121854377642. Its totient is φ = 1121854377640.

The previous prime is 1121854377629. The next prime is 1121854377653. The reversal of 1121854377641 is 1467734581211.

It is a balanced prime because it is at equal distance from previous prime (1121854377629) and next prime (1121854377653).

It can be written as a sum of positive squares in only one way, i.e., 661497555625 + 460356822016 = 813325^2 + 678496^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1121854377641 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1121854377641.

It is not a weakly prime, because it can be changed into another prime (1121854377671) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 560927188820 + 560927188821.

It is an arithmetic number, because the mean of its divisors is an integer number (560927188821).

Almost surely, 2^{1121854377641} is an apocalyptic number.

It is an amenable number.

1121854377641 is a deficient number, since it is larger than the sum of its proper divisors (1).

1121854377641 is an equidigital number, since it uses as much as digits as its factorization.

1121854377641 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1128960, while the sum is 50.

The spelling of 1121854377641 in words is "one trillion, one hundred twenty-one billion, eight hundred fifty-four million, three hundred seventy-seven thousand, six hundred forty-one".