1243829105641 has 2 divisors, whose sum is σ = 1243829105642. Its totient is φ = 1243829105640.

The previous prime is 1243829105633. The next prime is 1243829105689. The reversal of 1243829105641 is 1465019283421.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 873318285225 + 370510820416 = 934515^2 + 608696^2 .

It is a cyclic number.

It is not a de Polignac number, because 1243829105641 - 2³ = 1243829105633 is a prime.

It is a super-2 number, since 2×1243829105641² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1243829105591 and 1243829105600.

It is not a weakly prime, because it can be changed into another prime (1243829102641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 621914552820 + 621914552821.

It is an arithmetic number, because the mean of its divisors is an integer number (621914552821).

Almost surely, 2^{1243829105641} is an apocalyptic number.

It is an amenable number.

1243829105641 is a deficient number, since it is larger than the sum of its proper divisors (1).

1243829105641 is an equidigital number, since it uses as much as digits as its factorization.

1243829105641 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 414720, while the sum is 46.

The spelling of 1243829105641 in words is "one trillion, two hundred forty-three billion, eight hundred twenty-nine million, one hundred five thousand, six hundred forty-one".