10421643403 has 2 divisors, whose sum is σ = 10421643404. Its totient is φ = 10421643402.

The previous prime is 10421643383. The next prime is 10421643503. The reversal of 10421643403 is 30434612401.

10421643403 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10421643403 is a prime.

It is a super-2 number, since 2×10421643403² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (10421643503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5210821701 + 5210821702.

It is an arithmetic number, because the mean of its divisors is an integer number (5210821702).

Almost surely, 2^10421643403 is an apocalyptic number.

10421643403 is a deficient number, since it is larger than the sum of its proper divisors (1).

10421643403 is an equidigital number, since it uses as much as digits as its factorization.

10421643403 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6912, while the sum is 28.

The spelling of 10421643403 in words is "ten billion, four hundred twenty-one million, six hundred forty-three thousand, four hundred three".