1000401522643 has 2 divisors, whose sum is σ = 1000401522644. Its totient is φ = 1000401522642.

The previous prime is 1000401522599. The next prime is 1000401522733. The reversal of 1000401522643 is 3462251040001.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1000401522643 is a prime.

It is not a weakly prime, because it can be changed into another prime (1000401522343) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 500200761321 + 500200761322.

It is an arithmetic number, because the mean of its divisors is an integer number (500200761322).

Almost surely, 2^{1000401522643} is an apocalyptic number.

1000401522643 is a deficient number, since it is larger than the sum of its proper divisors (1).

1000401522643 is an equidigital number, since it uses as much as digits as its factorization.

1000401522643 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5760, while the sum is 28.

Adding to 1000401522643 its reverse (3462251040001), we get a palindrome (4462652562644).

The spelling of 1000401522643 in words is "one trillion, four hundred one million, five hundred twenty-two thousand, six hundred forty-three".