1211051828543 has 2 divisors, whose sum is σ = 1211051828544. Its totient is φ = 1211051828542.

The previous prime is 1211051828477. The next prime is 1211051828617. The reversal of 1211051828543 is 3458281501121.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1211051828543 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1211051828543.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1211051821543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 605525914271 + 605525914272.

It is an arithmetic number, because the mean of its divisors is an integer number (605525914272).

Almost surely, 2^{1211051828543} is an apocalyptic number.

1211051828543 is a deficient number, since it is larger than the sum of its proper divisors (1).

1211051828543 is an equidigital number, since it uses as much as digits as its factorization.

1211051828543 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 76800, while the sum is 41.

The spelling of 1211051828543 in words is "one trillion, two hundred eleven billion, fifty-one million, eight hundred twenty-eight thousand, five hundred forty-three".