6171420708641 has 4 divisors (see below), whose sum is σ = 6182266791300. Its totient is φ = 6160574625984.

The previous prime is 6171420708637. The next prime is 6171420708679. The reversal of 6171420708641 is 1468070241716.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2979852750625 + 3191567958016 = 1726225^2 + 1786496^2 .

It is a cyclic number.

It is not a de Polignac number, because 6171420708641 - 2² = 6171420708637 is a prime.

It is a super-2 number, since 2×6171420708641² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6171420705641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5423040476 + ... + 5423041613.

It is an arithmetic number, because the mean of its divisors is an integer number (1545566697825).

Almost surely, 2^{6171420708641} is an apocalyptic number.

It is an amenable number.

6171420708641 is a deficient number, since it is larger than the sum of its proper divisors (10846082659).

6171420708641 is a wasteful number, since it uses less digits than its factorization.

6171420708641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10846082658.

The product of its (nonzero) digits is 451584, while the sum is 47.

The spelling of 6171420708641 in words is "six trillion, one hundred seventy-one billion, four hundred twenty million, seven hundred eight thousand, six hundred forty-one".