6421102417 has 2 divisors, whose sum is σ = 6421102418. Its totient is φ = 6421102416.

The previous prime is 6421102399. The next prime is 6421102439. The reversal of 6421102417 is 7142011246.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5621400576 + 799701841 = 74976^2 + 28279^2 .

It is a cyclic number.

It is not a de Polignac number, because 6421102417 - 2²³ = 6412713809 is a prime.

It is not a weakly prime, because it can be changed into another prime (6421102817) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3210551208 + 3210551209.

It is an arithmetic number, because the mean of its divisors is an integer number (3210551209).

Almost surely, 2^6421102417 is an apocalyptic number.

It is an amenable number.

6421102417 is a deficient number, since it is larger than the sum of its proper divisors (1).

6421102417 is an equidigital number, since it uses as much as digits as its factorization.

6421102417 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2688, while the sum is 28.

The square root of 6421102417 is about 80131.7815663673. The cubic root of 6421102417 is about 1858.6738935693.

The spelling of 6421102417 in words is "six billion, four hundred twenty-one million, one hundred two thousand, four hundred seventeen".