1021643583041 has 2 divisors, whose sum is σ = 1021643583042. Its totient is φ = 1021643583040.

The previous prime is 1021643582989. The next prime is 1021643583067. The reversal of 1021643583041 is 1403853461201.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 802171009600 + 219472573441 = 895640^2 + 468479^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1021643583041 is a prime.

It is a super-2 number, since 2×1021643583041² (a number of 25 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1021643582986 and 1021643583004.

It is not a weakly prime, because it can be changed into another prime (1021643583071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 510821791520 + 510821791521.

It is an arithmetic number, because the mean of its divisors is an integer number (510821791521).

Almost surely, 2^{1021643583041} is an apocalyptic number.

It is an amenable number.

1021643583041 is a deficient number, since it is larger than the sum of its proper divisors (1).

1021643583041 is an equidigital number, since it uses as much as digits as its factorization.

1021643583041 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 69120, while the sum is 38.

The spelling of 1021643583041 in words is "one trillion, twenty-one billion, six hundred forty-three million, five hundred eighty-three thousand, forty-one".