4245215421671 has 16 divisors (see below), whose sum is σ = 4869357050688. Its totient is φ = 3625496582400.

The previous prime is 4245215421653. The next prime is 4245215421679. The reversal of 4245215421671 is 1761245125424.

4245215421671 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 4245215421671 - 2³⁰ = 4244141679847 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4245215421679) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24582101 + ... + 24754193.

It is an arithmetic number, because the mean of its divisors is an integer number (304334815668).

Almost surely, 2^{4245215421671} is an apocalyptic number.

4245215421671 is a deficient number, since it is larger than the sum of its proper divisors (624141629017).

4245215421671 is a wasteful number, since it uses less digits than its factorization.

4245215421671 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 184922.

The product of its digits is 537600, while the sum is 44.

The spelling of 4245215421671 in words is "four trillion, two hundred forty-five billion, two hundred fifteen million, four hundred twenty-one thousand, six hundred seventy-one".